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【单选题】
下列四组物质的分子式或化学式都相同,按物质的分类方法属于同一类物质的是 ( )A.
和CH 2 == =CH—CH 2 CH 2 CH 2 CH 3
B.
正戊烷和新戊烷
C.
CH 3 —O—CH 3 和CH 3 CH 2 OH
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举一反三
【单选题】根据企业所得税的有关规定，以下对于所得来源确定的表述中，正确的是（）。
A.
权益性投资资产转让所得按照投资企业所在地确定
B.
股息、红利等权益性投资所得，按照投资企业所在地确定
C.
租金所得，按照负担支付所得的机构所在地或个人的住所来确定
D.
转让不动产，按照转让不动产的企业或机构、场所所在地确定
【简答题】I am rather concerned ________ her, for I haven't heard from her since last winter. A) of B) at C) with D) about
【单选题】From her ______expression, I knew she hadn’t expected I would ask her such an ____ question.
A.
astonished; astonishing
B.
astonishing; astonished
C.
astonished; astonished
D.
astonishing; astonishing
【单选题】I had to______myself from telling her what I thought of her.
A.
retain
B.
restrain
C.
restrict
D.
restore
【单选题】I had difficulty in ______ myself from telling her what I thought of her.
A.
restraining
B.
retaining
C.
reserving
D.
restricting
【单选题】I'm rather anxious ______ her, for I haven't heard from her for a long time.
A.
toward
B.
about
C.
in
D.
over
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