– Do you know _____ this time yesterday?

搜题请搜索小程序“爱下问搜题”

问题选择题

-- Sorry, I don’t know.

A. what she is doing B. what was she doing C. what she was doing

答案

答案：C

此题主要考查宾语从句，宾语从句要求用陈述语序，从yesterday可知用过去时，B. what was she doing是疑问句序，所以选C.

不定项选择题

对A+3B=2C+2D来说，下列四种不同情况下的反应速率最快的是[ ]

A．υ(A)= 0.15 mol/(L·min)

B．υ(B)= 0.6 mol/(L·min)

C．υ(C)= 0.4 mol/(L·min)

D．υ(D)= 0.45 mol/(L·min)

判断题

一般认为实行浮动汇率制有助于一国减少其外汇储备的大量流失。