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【单选题】
. --- If I were you, I would have accepted the job. --- I ___________ the offer because it would mean frequent business trip away from my family,
A.
turned off
B.
turned down
C.
turned out
D.
turned up
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【单选题】将函数y=sin2x的图象向左平移 个单位，再向上平移1个单位，所得图象的函数解析式是 [     ]
A.
y=cos2x
B.
y=2sin 2 x
C.
y=2cos 2 x
D.
y=
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【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
查看完整题目与答案
【单选题】不属于上呼吸道感染的表现是:
A.
鼻塞、流涕、喷嚏
B.
咽痛
C.
发热
D.
呼吸困难
查看完整题目与答案
【判断题】The hormone erythropoietin, which is produced by the bone marrow in response to low oxygen supply.
A.
正确
B.
错误
查看完整题目与答案
【单选题】函数y=sin2x的图象向左平移 个单位再向上平移1个单位,所得图象的函数解析式是
A.
y=cos2x
B.
y=2cos 2 x
C.
D.
y=2sin 2 x
查看完整题目与答案
【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...
查看完整题目与答案
【单选题】（）婴幼儿听力异常的表现
A.
对周围环境中突然出现的较大声响反应淡漠
B.
你逗他他也会很开心的笑
C.
平常唱歌他也会跟着哼
D.
听到熟悉的声音会停止哭泣
查看完整题目与答案
【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
查看完整题目与答案
【简答题】make black white
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【单选题】What __________ will it make whether Mr.Black tells us the story early or not? [     ]
A.
sense
B.
difference
C.
mistake
D.
use
查看完整题目与答案
相关题目：
【单选题】将函数y=sin2x的图象向左平移 个单位，再向上平移1个单位，所得图象的函数解析式是 [     ]
A.
y=cos2x
B.
y=2sin 2 x
C.
y=2cos 2 x
D.
y=
查看完整题目与答案
【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
查看完整题目与答案
【单选题】不属于上呼吸道感染的表现是:
A.
鼻塞、流涕、喷嚏
B.
咽痛
C.
发热
D.
呼吸困难
查看完整题目与答案
【判断题】The hormone erythropoietin, which is produced by the bone marrow in response to low oxygen supply.
A.
正确
B.
错误
查看完整题目与答案
【单选题】函数y=sin2x的图象向左平移 个单位再向上平移1个单位,所得图象的函数解析式是
A.
y=cos2x
B.
y=2cos 2 x
C.
D.
y=2sin 2 x
查看完整题目与答案
【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...
查看完整题目与答案
【单选题】（）婴幼儿听力异常的表现
A.
对周围环境中突然出现的较大声响反应淡漠
B.
你逗他他也会很开心的笑
C.
平常唱歌他也会跟着哼
D.
听到熟悉的声音会停止哭泣
查看完整题目与答案
【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
查看完整题目与答案
【简答题】make black white
查看完整题目与答案
【单选题】What __________ will it make whether Mr.Black tells us the story early or not? [     ]
A.
sense
B.
difference
C.
mistake
D.
use
查看完整题目与答案