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【单选题】
Jack’s dad told him he could have________ he wanted for Christmas.A.
however
B.
whatever
C.
whichever
D.
whenever
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举一反三
【单选题】The author cites the British example in order to______
A.
show that the problem of drank driving is worse in Britain than in the U.S.
B.
prove that stricter laws against drinking drivers would reduce traffic deaths
C.
prove that a slight increase in the number of arrests of drank drivers will not deter drunk driving
D.
suggest that taxation of alcohol consumption may be more effective than criminal laws
【单选题】Some scholars have come ______ a new solution to the problem of population control.
A.
up
B.
up with
C.
down
D.
down with
【简答题】药物分子中引入磺酸基 查看材料
【简答题】含有磺酸基 查看材料
【简答题】What impact has customer feedback had on Dell 's business?
【简答题】含有磺酸基（ ）。
【单选题】It can be seen from the passage that the problem of resource conservation in agriculture ______.
A.
has been solved in the U.S.
B.
has not yet been paid any attention to
C.
is being seriously and effectively dealt with
D.
will soon be solved by using more capital and land
【简答题】Use more formal alternatives to the underlined words. Make any necessary grammatical changes. The book is mainly concerned with the problem of policing the internet. ( ) Almost every sc...
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