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【单选题】
在北半球热带气旋移动的基本规律是:A.
向西北走抛物线型
B.
先向西然后向东北走抛物线型
C.
先向西然后转向东南走抛物线型
D.
向西南走抛物线型
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皮皮学刷刷变学霸
举一反三
【单选题】Some experts warn that it will do harm to our health if we drink _________water only.
A.
wonderful
B.
pure
C.
grateful
【简答题】图解法适用于含有 个变量的线性规划问题。
【单选题】An increasing number of people enjoy sun-bathing, but experts warn that too much ________of the body to strong sunlight is harmful．
A.
access
B.
exposure
C.
resistance
D.
touch
【单选题】The experts study on the problem of erosion can______.
A.
warn people whose homes are in danger
B.
provide an effective way to slow it down
C.
help to its eventual solution
D.
lead to its eventual solution
【简答题】比较定性研究与定量研究。
【简答题】图解法适用于含有 个变量的线性规划问题。
【简答题】不定积分在几何上通常表示__________________.
【单选题】Experts warn that global warming will cause dramatic climate changes, including more ________ floods, heat waves and droughts. [ ]
A.
usual
B.
frequent
C.
ordinary
D.
common
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