People who have regular physical exercise seldom catch a disease like H1N1 Flu,

题型：不详难度：来源：

People who have regular physical exercise seldom catch a disease like H1N1 Flu, ______?

A．don’t they

B．haven’t they

C．do they

D．have they

答案

解析

略

举一反三

Jenny was sad over the loss of the photos she shot in Canada, _________ this was a memory she especially treasured.

A．if

B．when

C．as

D．where

题型：不详难度：| 查看答案

It was the first time ________ I ________ face to face with a thunder storm.

A．when / had come

B．that / have come

C．when / came

D．that / had come

题型：不详难度：| 查看答案

What difficulty do you have the poor children from the poor village?

A．helping

B．in help

C．to help

D．helped

题型：不详难度：| 查看答案

Depression is the leading cause of suicide, __ __ in turn is the third leading cause of death among 15 to 24 year olds in the United States．

A．who

B．which

C．that

D．what

题型：不详难度：| 查看答案

___ is well known is that Africa had contacts with India and the Red Sea civilizations from the earliest times．

A．As

B．It

C．What

D．That

题型：不详难度：| 查看答案