When parents come to visit our school last week, Tom _______ them into the classroom.

A．was conducting     B．would conduct        C．conducted        D．has conducted

Donald doesn’t have much patience — he often loses his _______.

   A. courage          B. mind                                C. balance                       D. temper

Magnetic interference from MP3 headphones can interfere with heart pacemakers （心臟起搏器）and implantable defibrillators, a study has found.

Heart patients with such devices should not put their headphones in their breast pocket or hang them round their neck, researchers have warned.

Small but strong magents inside headphones can deactivate the devices if placed within 1.2 inches of them, posing a real risk to the patient, researchers told an American Heart Association meeting in New Orleans. The MP3 players themselves posed no threat to pacemakers and defibrillators.

Dr. William Maisel of the Medical Device Safety Institute at Beth Israel Medical Center in Boston led a team that tested eight models of MP3 player headphones, including clip-on and ear bud types, in 60 defibrillator and pacemaker patients. They placed the headphones on the patients' chests, directly over the devices. The headphones interfered with the heart devices in about a quarter of the patients and interference was twice as likely in those with a defibrillator than with a pacemaker.

A pacemaker sends electrical impulses to the heart to speed up or slow cardiac rhythm. The magnet, however, could make it deliver a signal no matter what the heart rate is, possibly leading to palpitations or arrhythmia, the researchers said.

An implantable defibrillator signals the heart to normalize its rhythm if it gets too fast or slow. A magnet could de-activate it, making it ignore an abnormal heart rhythm instead of delivering an electrical shock to normalize it. The devices usually go back to working the right way after the headphones are removed, the researchers said.

"The main message here is: it's fine for patients to use their headphones normally, meaning they can listen to music and keep the headphones in their ears. But what they should not do is put the headphones near their device," Dr Maisel said.

72. The underlined word deadactive in the third paragraoh probably means “to make something_______”

A. incorrect     B. normal      C. ineffective        D. useful

73. According to the study, what is actually endangering heart patients with heart devices?

    A. The music they hear with MP3 headphones

B. The eight models of MP3 players that have been tested.

C. Magnetic interference from MP3 headphones.

D. The magnets inside pacemakers and defibrillators.

74. What is the fourth paragraph about ?

A. Atest to monitor how heart beats are interfered with.

B. How many patients were tested 

C. A brief introduction to defibrillators and pacemakers .

D. Dr. William Maisel was concerned about heart problems.

75. From the passage we can learn that________.

A. MP3 players are gaining popularity among heart patients

B. pacemakers and defibrillators are actually harmful to people’s health

C. heart patients should not listen to music.

D. pacemakers and defibrillators can help normalize heart rhythm

---______Which team won the game?

  ---_______Oh,they _______each order in the end, which was more than expected.

A.  beat     Bwon          C.  tied          D. defeated

23．To everybody's surprise, the fashionable young lady ___________ to be a thief.

A．found out       B．proved out       C, put out          D．turned out

13． --Hi, Lydia． Are you going to the concert on Friday?

    - -I’d like to. But there are so many problems ____.

     A． remaining to be settled       B． remained settling

C． remaining to settle          D． remained to be settled

18．An explosion in a coal mine in Heilongjiang on Nov. 21, 2009______at least 106 workers dead.

       A．promoted                B．kept                       C．left                         D．Created

Section D:

Directions: Read the passage carefully. Then answer the questions or complete the statements in NO MORE THAN 25 WORDS.

  As skies fill with millions of migrating birds, European scientists say the seasonal miracle appears to depend on a seeming contradiction: The fatter the bird, the more efficiently it flies. The results of their study contradict a central theory of aerodynamics（空氣動力學(xué)）, which predicts that the power needed to fly increases with weight.

  For birds, apparently, the cost of flying with heavy fuel loads is considerably smaller than previously thought. Researchers found that red knot wading birds double their normal body weight of 100 grams before making their twice-a-year, nonstop commute between the British Isles and the Russian Arctic. Distance: 5,000 kilometres.

  Another study in the journal Nature measured the benefits of flying in an aerodynamic V formation, which allows birds to save energy by gliding in the lead bird’s air stream.

  Flying in formation, their heart rates were as much as 14.5 per cent lower than flying solo, according to Henri Wimerskirch, a French scientist. The findings help explain how birds complete difficult migrations. Researchers had assumed that thinner, more athletic birds would have the best chance of survival.

  The first study suggests that building up fat deposits to be burned as fuel during the migration is worth more than the energy it takes to carry the additional weight. Heavier birds apparently use their muscles more efficiently.

  In the study, researchers said their team studied the birds flown at different body masses during 28 simulated flights. They were injected with a small amount of water containing a radioactive element that enabled the team to measure the amount of energy burned.

How much will a red knot wading bird probably weigh before making its nonstop migrating flight?

_____________________________________________________________________________

86. The additional weight gained before the flight won’t increase the powered needed to fly; on the contrary, it works as _______________________________

87. How did scientists successfully conduct the first study?

___________________________________________________________________________________

88. We can infer from the studies on fat deposits and V formation flying that both factors _______________________________________________________________________________

27. A: What’s the matter, Sara? You wear a sad look on your face.

   B: Oh, nothing much. As a matter of fact, I _______ of my friends back home.

A. just thought                                        B. have just been thinking

C. was just thinking                               D. have just thought        

15. An awful crash between an express train and a bus _____ , however, occur the other day in Russia.

A. does    B. did     D. has to     D. had to