科目: 來(lái)源: 題型:
I hear that his business________recently.
A.takes off B.is taking off
C.succeeds D.is succeeding
查看答案和解析>>
科目: 來(lái)源: 題型:
More and more young people are fond ________ playing tennis nowadays.
A. on B. to C. in D. of
查看答案和解析>>
科目: 來(lái)源: 題型:
—Why are you tired climbing mountains?
—When I lived in the country, I was too tired climbing mountains because around my village were full of mountains.
A. of; of B. of; with C. with; of D. with; from
查看答案和解析>>
科目: 來(lái)源: 題型:
Einstein once refused to speak on the radio _____ $1,000 a minute. Another time he was seen using a check _____ $ 1,500 as a bookmark.
A. for; of B. for; for C. at; for D. at; at
查看答案和解析>>
科目: 來(lái)源: 題型:閱讀理解
Some plants get so hungry they eat flies, and even small frogs. What's more amazing is that these plants occur naturally (in special environments) in every state. In fact, they're found on every continent except Antarctica.
You've probably seen a Venus' flytrap -- a small plant, which grows 6 to 8 inches tall in a container. At the end of its stalks (莖) are leaves that act like traps (陷阱). Inside each trap is a lining of tiny hairs. When an insect lands on them, the traps suddenly shut. Over the course of a week or so, the plant feeds on its catch.
The Venus' flytrap is just one of more than 500 species of meat-eating plants, says Barry Meyers-Rice, the editor of the International Carnivorous Plant Society's Newsletter. He states although you might have read some science-fiction stories, no meat-eating plant does any danger to humans.
Barry says a plant is meat-eating, only if it does all four of the following: "attract, kill, digest, and absorb" some form of insects. Meat-eating plants look and act like other green plants -- well, most of the time.
All green plants make sugar to produce food. What makes meat-eating plants different is their special leaves, which need insects for one reason: nitrogen (氮). Nitrogen is a nutrient that they can't obtain any other way. Why?
Almost all green plants on our planet get nitrogen from the soil. Meat-eating plants can't. They live in places where nutrients are hard to get from the soil because of its acidity. So they've come to rely on getting nitrogen from insects and small animals. In fact, nutrient-rich soft is poisonous to meat-eating plants. Never fertilize (施肥) them! But don't worry, either, if they never seem to catch any insects. They can survive, but they'll grow very slowly.
1. According to the passage, a Venus' flytrap ______.
A. is a small plant which grows in a container
B. is a kind of plant which gets hungry easily
C. can trap and feed on some form of insects
D. can only grow 6-8 inches tall
2. From the passage, we can infer that ______.
A. meat-eating plants are found nowhere else except Antarctica
B. all green plants get nitrogen from the soil
C. meat-eating plants endanger humans in science-fiction stories
D. the nutrient-poor soil is beneficial to meat-eating plants
3. Meat-eating plants grow very slowly, ______.
A. so you'd better fertilize them
B. probably because the supply of nitrogen is cut off
C. simply because they can't absorb nitrogen from the soil
D. and then they will die slowly
4. Which of the following is true?
A. Meat-eating plants look and act like other green plants.
B. It's hard to get nutrients in the soil when acidity is high.
C. The Venus' flytrap eats flies to get nutrient from them.
D. Green plants make sugar at night.
查看答案和解析>>
科目: 來(lái)源: 題型:
You’ll soon________if you manage to have a good rest.
A.pick out B.turn out
C.pick up D.turn off
查看答案和解析>>
科目: 來(lái)源: 題型:
Please _________ me at the station on time.
A. to meet B. meeting C. meet D. you meet
查看答案和解析>>
科目: 來(lái)源: 題型:
Both of the sofas they ordered online arrived, but fit through the doorway.
A.none B.nor C.neither D.either
查看答案和解析>>
科目: 來(lái)源: 題型:
_____ he thought he was helping us with the work , he was actually in the way.
A.Because B.If C.Although D.When
查看答案和解析>>
百度致信 - 練習(xí)冊(cè)列表 - 試題列表
湖北省互聯(lián)網(wǎng)違法和不良信息舉報(bào)平臺(tái) | 網(wǎng)上有害信息舉報(bào)專(zhuān)區(qū) | 電信詐騙舉報(bào)專(zhuān)區(qū) | 涉歷史虛無(wú)主義有害信息舉報(bào)專(zhuān)區(qū) | 涉企侵權(quán)舉報(bào)專(zhuān)區(qū)
違法和不良信息舉報(bào)電話:027-86699610 舉報(bào)郵箱:58377363@163.com