当前图形有四个层0，A1，A2，A3，如果A3为当前层，下面哪句话是_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

当前图形有四个层0，A1，A2，A3，如果A3为当前层，下面哪句话是正确的（）。

A.只能把A3层设为当前层

B.可以把0，A1，A2，A3中的任一层设为当前层

C.可以把四个层同时设为当前层

D.只能把0层设为当前层

答案

参考答案：B

多项选择题

放坡基坑施工中，当边坡有失稳迹象时，应及时采取()或其他有效措施。

A.削坡

B.坡顶卸荷

C.坡脚压裁

D.坡面防护

E.加强监测巡视

补全对话，情景问答

选择正确的句子，补全对话。

A. We can go there by bike.
B. Where are you going?
C. I'd like to.
D. Are you free (空闲) tomorrow?
E. Kate, Lily and I are going on a picnic (野餐).
F. I like go boating.
G. What day is it tomorrow?
H. We can go boating.

A: Hi, Lucy! 1.
B: Yes, I am. 2.
A: Tomorrow is Saturday. 3.           Would you like to go with us?
B: 4.           But 5.
A: We are going to a lake.
B: That's a good idea! 6.            and we can go fishing.
A: Yes, 7.
B: OK, I like going boating, too. How are we going there?
A: 8.
B: I agree with you.