豆浆被称为“植物奶”,其中的异黄酮(C15H10O2)具有防癌功能,下列说法正确的是 A.异黄酮是氧化物 B.异黄酮中碳元素质量分数最大 C.异黄酮中C、H、O三种元素的质量比为15:10:2 D.异黄酮由15个碳原子,10个氢原子和2个氧原子构成 答案:B1、1.It _________(be)seven o'clock in the evening.Mr. and Mrs. Smith usually(have)_________supper at 7:00.
2.—What ___________Jane __________(do)on weekends?
—He__________(do)his homework and __________(watch)TV.
3.Jeff _________(like)__________(listen)
to music very much.
4.Can you_________(play)the guitar?
5.Can he _________(join)us?
6.I want(go)__________to see an action movie, but Ann(not
like)______it.