问题 单项选择题

水土流失预测中,通用水土流失方程式A=R·K·L·S·C·P,式中, A表示( )。

A.土壤侵蚀模数
B.水土流失量
C.水土保持措施因子
D.土壤可蚀性因子

答案

参考答案:A

解析: 在公式中,A为单位面积多年平均土壤侵蚀量,又称为土壤侵蚀模数。

完形填空

根据对话内容,从对话后的选项中选出能填人空白处的最佳选项。选项中有两项为多余选项。

A:Hello! This is Li Mei Calling from Jilin.May I speak to Carla?

C:Just a moment,please. ___1___

B:Hello?

A:Hi,Carla! This is Li Mei calling from Jilin.How are you?

Bt Oh,hi,Li Mei! How nice to hear your voice! I’m fine,thank you.

A:Thank you so much for giving me such a lovely time in Trindad.

B: ___2___  I hope you can come again some day!

A:I’d love to ! I wonder,though,if you are interested in visiting me during the Spring Festival this year. __3___.

B:Oh.I’d love to, but I don’t know if I will be free then. What time of year is it?

A: ___4___ but this year it’s at the beginning of February.

B:I’d love to come.  I’ll try to find out if I can take off work then.It’s very kind of you to invite me!

A:Oh,don’t mention it! I hope you can come! Say hello to Hari for me! I hope he can come to

China with you.

B:That would be fun! Thanks a lot for calling !__ 5___

A:OK, great! Have a good day!

B:Thanks,you too,bye!

A:Bye!

A.Oh.sorry.he isn’t here at the moment

B.I’ll get her for you

C.It was a pleasure having you here.

D.It is always the same each other.E. I’d love to show you one of our Chinese festivals.

F. I’ll let Hari know you called.

G. It’s different every year.

温馨提示:

请将补全对话答案涂在机读卡上   E="AB       " F="AC     " G=AD

选择题