4.Some glasses got_____________________(break) when we were moving.

3.The difficulty we had in ___________________ (find) his house is that we didn't know the way.

DNA left at a crime scene could be used in the future to build up a picture of an offender's face, which was re?vealed tonight.

A first step towards genetic mugshots has been taken by researchers in the US who link specific DNA markers with face shapes. To identify the genes, they focused on known mutations (突變)that cause changes of the face and head. Normal versions of these genes were found to influence individual features. For in?stance, one gene affected the lips, another the shape and configuration of bones around the eyes, and a third the appearance of the mid-face and skull. In total, 20 genes had "significant effects" on facial appearance.

Lead scientist Professor Mark Shriver, from the Penn?sylvania State University? said, "We use DNA to match to an individual or identify an individual, but we can get so much more from DNA. Currently we can't go from DNA to a face, or from a face to DNA, but it should be possible." The implications are far-reaching, raising the possibility of creating a data bank of facial types based on genetic markers. DNA from a crime scene could then be used to produce a rough image of the face of an offender or vic?tim. Such genetic mugshots may be more reliable than computer-generated "E-fits" based on witnesses' memo?ry. Other uses of the technique might include proving the identities of fathers in paternity cases, or visualizing our remote ancestors from fossil DNA.

The scientists wrote in the online journal Public Li?brary of Science Genetics, " Such predictive modelling could be forensically useful. For example, DNA left at crime scenes could be tested and faces could be predicted in order to help to narrow the pool of potential suspects. Further, our methods could be used to predict the facial features of descendants, deceased ancestors, and even extinct human species. In addition, these methods could prove to be useful diagnostic tools. " The team devel?oped a model which first established a range of physical face shapes from people of mixed West African and Eu?ropean ancestry from the US, Brazil and Cape Verde. Measurements were taken of thousands of point coordi?nates on grids placed over 3-D images of the faces.

Statistical methods were then used to determine the relationship between facial differences and the effects of genders, ethnic ancestry and individual gene variants.

5.    The underlined word "mugshots" in the second paragraph most probably means "

A,  different faces B. characteristics

C.  pictures of faces     D. genders

6.    What can be inferred from the passage?

A.    DNA has been used to build up a picture of an offender's face.

B.    It may be much easier to catch criminals with the help of DNA.

C.    In all, 20 genes had"significant effects"on facial appearance.

D.    One gene can affect more than one part of your face.

7.    According  to  Professor  Mark  Shriver ，   we know

A.    they can merely match to an individual or identi?fy an individual

B.    there is a possibility of going from DNA to a face

C.    DNA could be used to produce a rough image of an offender's face

D.    this technology is more reliable than computer-gen?erated "E-fits"

8.    What is the most possible title of the passage?

A.    Creating a data bank of DNA

B.    Recognizing the DNA of criminals

C.    Predicting the locations of offences using DNA

D.    Building up an image of an offender's face from DNA

2.They ________________(cycle) empty tins so as to use the metal.

按要求完成下列各題

.用所給詞的適當形式填空

1.Wearing a pair of sunglasses is a good ____________________(protect) from the sun in summer.

5.地方政府是時候該認真思考環(huán)境問題，并想出辦法減少污染了。

It is time for the local government________________the environment and think of ways to reduce pollution.

4.不要把垃圾扔掉了，如果可能的話，回收利用。

Don't throw away the garbage, and, ______________________， recycle.

3.這個男孩在聽，但我不知道他能理解多少。

2.簡言之，這并不是我想要的，而且相差甚遠。

   _____________________________________，it isn't what I want. Instead, it is far from it.

根據(jù)中文意思使用恰當?shù)亩陶Z完成句子

1. 我會盡可能在規(guī)定的時間內(nèi)完成這項任務。

I will_______________  the task by the given time.