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【简答题】
计算 50% 的发烟硫酸折算纯硫酸的浓度。
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【单选题】He dressed himself quickly, _____ his schoolbag and went to school.
A.
carrying
B.
to carry
C.
carried
D.
carries
【单选题】When a matador is in his costume, they say he's dressed in'lights' —on account of the spangle and glitter of his suit. As you might expect in the garishly symbolic world of bullfighting, though, itmea...
A.
One of his ancestors appeared in Hemingway's novels.
B.
He was born in a famous family.
C.
His wife was famous in tabloid stories.
D.
His mother is of noble birth.
【单选题】He dressed quickly, _______ hurriedly, grabbed his briefcase and hurried off down the hotel corridor.
A.
shave
B.
shaving
C.
to shave
D.
shaved
【单选题】— You’d better not judge a person _____ his appearance. —I know all the people dressed _____ rags are not beggars.
A.
in; in
B.
by; by
C.
in; by
D.
by; in
【单选题】. He dressed himself quickly and ___________ his schoolbag, went to school.
A.
carried
B.
to carry
C.
carrying
D.
Carries
【单选题】Out of the crowded bus ,who was dressed in a black suit and waved to a woman.
A.
a tall man in his thirties stepped
B.
stepped a tall man in his thirties
C.
did a tall man in his thirties step
D.
did a tall man step in his thirties
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