8. What happened in the wake of Wilmut's announcement? A. Governments hurried to draft guidelines for a future filled with incredible possibilities. B. President Clinton ordered a national commission to study the legal and moral implicat...

4. Computers work according to () planted into them. A. genes B. cells C. programs D. plans ...

5. Why are trees so important in the ecosystem? A. They can decorate the environment. B. Trees are necessary to build topsoil. C. They can maintain rainfall in dry climates. D. They can purify underground water. ...

10. The human can react to any situation, some of which he may never have imagined. A. 错误 B. 正确 ...

3. According to Dr. McKinley, what is not the primary cause of the environmental problem? A. Deforesting and global warming. B. The abuse of natural resources. C. Air and water pollution. D. The attitude of human beings. ...

8: The synonyms to “powerful” are(). A: weak B: strong C: inert D: forceful ...

3. The United States and European countries have equal numbers of students from abroad. Foreigners don’t study in developing countries. A. 错误 B. 正确 ...

13. I don't like him; he always pokes his () into other people's affairs. A. fingers B. nose C. hands D. foot ...

10. Spam blockers are a kind of virus which prevents your email box from receiving any emails. A. 错误 B. 正确 ...

17: Compounding is one type of word formation by combining both free morphemes and bound morphemes. A: 错误 B: 正确 ...