at midday
when it is cold
When firewood is lacking
in improving taste and nutrition
第1题:
According to the passage,a great variety of influenza strains can appear when______.
A. H and N spikes are produced
B. animal and bird viruses are combined
C. dissimilar types virus recombine
D. two viruses of the same type are contracted
第2题:
According to the passage,which of the following is true? ( )
A. Tell the truth,even when you are wrong.
B. Keep some animals to kill them.
C.Look down on new ideas.
D. Everything on the Internet is good for children.
第3题:
According to the passage, what is the most important job for a perfect mom?
________________________________________________________
第4题:
Bow spring line
Inshore head line
Stern breast line
Bow breast line
第5题:
第6题:
When could the risk of asbestos disappeared according to the passage?
A) When we adopt the researchers' advice.
B) When we don't use asbestos.
C) For many years from now, it will not disappear.
D) The council have already find ways to prevent the risk.
第7题:
第8题:
According to the passage,most farmers' debts had to be paid______.
A. when the autumn harvest had just been completed
B. because wheat prices were high
C. as soon as the Winnipeg Grain Exchange demanded payment
D. when crop failure caused depression
第9题:
fishing
hunting
swimming
singing
第10题: