一元二次方程x2+x-2=0的两根之积是[ ] A.-1 B.-2 C.1 D.

阅读下列短文,根据以下提示: 1)汉语提示 ;2)首字母提示 3)语境提示,在每个空格内填入一个适当的英语单词,并将该词完整地写在相对应的横线上。所填单词要求意义准确，拼写正确。

Women are playing a much more important part in society today.

Now women are working ___teachers, scientists and even leaders.     小题1:____

We have to admit the fact that almost all jobs ____ used to be done by 小题2:____

men are done perfectly well today by women. Women are no longer l__小题3:____

Down upon in society. With these __(改变) in their social role, women’s小题4:___

position in the family has been __(改善) as well. It is hard to find the 小题5:___

wife is busy while the husband is sitting in an armchair, w__ TV.            小题6:___

In spite of all these changes, a great n___ of men still guard their            小题7:___

rights. They t___ of women as incapable creatures. Sometimes few    小题8:___

women are allowed to ___(出席) important meetings. This is the            小题9:___

problem we should try to __(解决) now                                                   小题10:___

广义的有价证券包括（）。

A.商品证券

B.凭证证券

C.货币证券

D.资本证券

（）首次在越南战场上使用激光和电视制导炸弹。

A.中国

B.苏联

C.美国

D.法国