9: How do people celebrate Christmas? A: decorating houses and yards with lights B: putting up Christmas trees C: giving gifts D: sending greeting cards ...

1: In what ways can scientists change genes? A: They can break them into pieces. B: They change the structure of DNA C: They can form the pieces into new shapes. D: They can also put genes from one organism into another. ...

7: Long and cold winter is a time for more diseases. A: 错误 B: 正确 ...

8: SAD is(). A: a mood disorder B: a health condition usually happens in long winters C: a natural emotional response of human beings to the longer dark periods in winter D: an incurable disease which will grow into serious psychologica...

20: Getting off the bus, (). A: his purse was lost B: he found his purse lost C: he found his purse losing D: his purse was missing ...

16. The two world wars have made many women war(), experiencing a hard time. A. victors B. widows C. wives D. mothers ...

10. I lvoe my country so much that I am prepared to () her. A. devote to B. devote my life to C. devoting my life to D. to devote my life for ...

8. From the 1960s on, there were many new changes in the structure of the family around the globe. A. 错误 B. 正确 ...

8. A modern young woman might like to think that she looks like a beautiful movie star, which indicates (). A. A modern young woman wants to be as attractive as possible. B. Most modern women have the strong desire to become beautiful. ...

4. More and more people in modern societies get()due to the huge work pressure. A. excited B. happy C. depression D. high ...