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【多选题】
以下关于玻璃纤维描述正确的是A.
E玻纤又称为无碱玻纤，力学性能较高，电绝缘性能较好，但不耐酸
B.
C玻纤又称为中碱玻纤，力学性能适中，耐酸耐水性好
C.
S玻纤强度和模量均比普通玻纤高
D.
C玻纤可用于增强水泥制品
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【单选题】It was ten years later____ he knew that the boy was his brother.
A.
which
B.
that
C.
what
D.
when
【单选题】The writer knew what the teacher said to the little boy.
A.
Right.
B.
Wrong.
C.
Doesn't say.
【简答题】In junior high school, one of my classmates, Ethan, was addicted to TV. This boy simply knew everything about such pop shows as Who’s the Boss ? Then one day Ethan’s mother made an offer in order to d...
【单选题】It seems the boy knew everything, though in fact he does not. [ ]
A.
like
B.
that
C.
as
D.
as if
【单选题】The lively boy suddenly appeared to be ________ quiet, so his mother knew something unusual must have happened.
A.
casually
B.
consequently
C.
curiously
D.
constantly
【单选题】1990年4月,我军选派了5名军事观察员赴____执行联合国维和任务,开启中国军队参加联合国维持和平行动的序幕。
A.
联合国停战监督组织
B.
联合国柬埔寨临时权力机构
C.
联合国伊拉克-科威特观察团
【单选题】The boy knew everything ____ .
A.
the moment he was asked to stay behind
B.
when the teacher started talking about honesty
C.
only some time later
D.
when he was walking out of the room
【单选题】I knew the lady________Bill when she spoke of a bright young boy. [ ]
A.
referred to
B.
was referring to
C.
pointed at
D.
was pointing at
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