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直接写得数 ①4.2×0.5= ②4.5×10%= ③15÷10%= ④0.8 3 = ⑤10.8-3.9-4.1= ⑥ ( 3 4 + 1 5 )×20 =
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【单选题】Not only ______ prepare lunch for us, but also _______ clothes for us.
A.
he did , he washed
B.
he did , did he wash
C.
did he , he washed
D.
did he, did he wash
【单选题】This passage is mainly about the development of psychological tests and their practical use.
A.
Y
B.
N
C.
NG
【单选题】Young as he is, he is fairly______.
A.
practicable
B.
permanent
C.
portable
D.
practical
【简答题】招聘启事通常由 、 、 三部分构成。
【单选题】He is a good leader. He can distinguish practical questions from moral issues and he knows when to ______ and when to fight.
A.
struggle
B.
compromise
C.
compete
D.
strive
【单选题】金属离子 M 与 L 生成逐级配位化合物 ML 、 ML 2 、 ... 、 ML n ,下列关系式中正确的是
A.
[ML n ]=[M][L] n
B.
[ML n ]= K n [M][L]
C.
[ML n ]= β n [M] n [L]
D.
[ML n ]= β n [M][L] n
【简答题】每条php语句以_________结尾。
【简答题】.曲线 在与直线 的交点处的切线方程为 .
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