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【单选题】
Hox genes that are expressed more anteriorly comprise Hox genesA.
with all possible numbers and letters, since there is no system tic relationship between the gene designations and the expression patterns of the Hox genes
B.
with higher numbers, such as Hoxa13
C.
with letters, so that anterior genes are Hoxa1-13 , and posterior genes are Hoxp1-13
D.
with lower numbers, such as Hoxa1 .
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【单选题】The goods online _________ usually cheaper than in the shopping mall.
A.
are
B.
do
C.
is
【单选题】The goods online are usually ________ than in the shopping mall .
A.
cheap
B.
cheaper
C.
cheapest
D.
expensive
【简答题】The goods online are usually cheaper ________in the shopping mall.A. than
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A.
larger
B.
bigger
C.
cheaper
D.
intensive
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A.
a; /
B.
an; the
C.
an; /
D.
the; the
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