[单项选择]Some countries are more populous; some have more crime. But in no other country are crime fighters quite so knowledgeable about citizens as in Britain. On January 4th a boastful Home Office detailed the triumphs of the world’s biggest forensic DNA database, which holds samples from more than 5% of the entire population of England and Wales. Recent changes to the rules governing the database mean that it may eventually hold profiles from more than a fifth of all adults.
Once a country starts storing DNA samples from criminals it is hard to resist the urge to expand the collection. When the National DNA Database (NDNAD) was set up in 1995, samples could only be taken from those charged with "recordable" offences. If a suspect was not tried, or was freed, the sample had to be destroyed and the profile removed from the database.
That law was abandoned in 2001 , after two men who had been convicted of murder and rape had their cases overturned on appeal -the DNA evidence against t
A. B．British citizens are quite knowledgeable about DN

[单项选择]Some countries are more populous; some have more crime. But in no other country are crime fighters quite so knowledgeable about citizens as in Britain. On January 4th a boastful Home Office detailed the triumphs of the world’s biggest forensic DNA database, which holds samples from more than 5% of the entire population of England and Wales. Recent changes to the rules governing the database mean that it may eventually hold profiles from more than a fifth of all adults.
Once a country starts storing DNA samples from criminals it is hard to resist the urge to expand the collection. When the National DNA Database (NDNAD) was set up, in 1995, samples could only be taken from those charged with "recordable" offences. If a suspect was not tried, or was freed, the sample had to be destroyed and the profile removed from the database.
That law was abandoned in 2001, after two men who had been convicted of murder and rape had their cases overturned on appeal--the DNA evidence against t
A. B．British citizens are quite knowledgeable about DN

[单项选择]—Mr. Johnson, would you have some more ice-cream
—No, thanks. It’s very good, but I have to（）my weight, you know.
A. remain
B. watch
C. notice
D. care

[单项选择]Some researchers have undertaken some psychological studies which prove that many children develop fears of（）dangers
A. imagination
B. imaginary
C. imaginable
D. imaginative

[单项选择]

M: Have some more sweets, please.
F: No, thanks. My teeth ... er ...

What does the woman mean（）
A. She wants to eat the sweets.
B. The sweets will be bad for her teeth.
C. She has had enough.

[单项选择]

Some people have malnutrition. Their diets have too much or too little of some nutrients ,or too many or too few calories. Nutritionists have three major ways of deciding if a person has malnutrition: physical exams, laboratory tests, and diet studies.
In the physical exam, the nutritionist looks for external signs of malnutrition. For one thing, the nutritionist looks at the patient’s skin. Rough, dry skin, for example, may mean that the patient does not have enough vitamin A. In addition, the nutritionist looks at the patient’s mouth. Cracks at the corner of the mouth, a purplish or bright red tongue, and bleeding gums can all be signs of vitamin deficiencies. The nutritionist also notices the patient’s hair. If a patient does not have enough protein, the hair may be thinner and duller than normal.
In laboratory tests, nutritionists look for the amounts of nutrients patients have in their bodies. There are two main types of laboratory tests: bl
A. Nutritionists have two laboratory ways of deciding if a person has malnutrion.
B. Having too much of some nutrients is much better than having too little of those.
C. The nutritionists are able to look for external signs of malnutrition.
D. Too many calories will make some people have malnutrition, too.

[填空题]But some books would cost more than I have.
But I didn’t ______ to buy some books.

[填空题]Some researchers have discovered that chimpanzees have a hallmark of human culture.