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【单选题】
The New Compact project is different from the Edison Project because in it ______.A.
teachers are discovering for themselves what children and parents need
B.
there is someone telling teachers how to teach and what to learn
C.
teachers are from better background
D.
students and parents go to school together
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【单选题】More than 50 corticosteroid hormones are produced in the adrenal cortex by reactions that remove the side chain from the D ring of cholesterol and introduce oxygen to form keto and hydroxyl groups. Ma...
A.
25
B.
35
C.
50
D.
65
【单选题】The leaves of the plant Camellia sinensis______.
A.
can be used to make green tea or black tea after proper treatments
B.
are turned into oolong or black tea leaves for the purpose of curing
C.
have powerful evidence to show its healing power for certain illnesses
D.
taste good yet do little more than warm up the drinker
【简答题】Potassium chromate, a bright yellow solid, is produced by the reaction of solid chromite ore (FeCr 2 O 4 ) with solid potassium carbonate and gaseous oxygen at high temperature. The other products of ...
【单选题】在INCOTERMS 2010 规定的11个贸易术语中,按照DDP成交时,由于______________________, 货物的出口价格最高。
A.
买方需要指定承运人到出口国指定地点接收货物
B.
卖方需要承担最多的费用，包括在进口国的报关费用以及运输保险费用
C.
这种术语在国际贸易中很少使用
D.
买方需要办理进口报关手续
【简答题】给出下列四个命题： ①“k=1”是“函数y=cos 2 kx-sin 2 kx的最小正周期为π”的充要条件； ②函数y=sin（2x- π 6 ）的图象沿x轴向右平移 π 6 个单位所得的函数表达式是y=cos2x； ③函数y=lg（ax 2 -2ax+1）的定义域是R，则实数a的取值范围是（0，1）； ④设O是△ABC内部一点，且 OA + OC =-2 OB ，则△AOB与△AOC的面积之比为...
【单选题】要得到函数y=cos 1 2 x的图象，只需将函数y=sin 1 2 x的图象沿x轴（ ）
A.
向左平移π个长度单位
B.
向左平移 π 2 个长度单位
C.
向右平移π个长度单位
D.
向右平移 π 2 个长度单位
【简答题】Lactic acid is produced in your muscles during rapid exercise when the body cannot supply enough oxygen to the tissues.A. True B. False
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