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【单选题】
在一定实验条件下，测得某植物光合作用速率与光照强度之间的关系、细胞呼吸与氧气浓度之间的关系及光合作用速率、细胞呼吸速率与温度之间的关系如下图所示，对图示解释正确的是（）
A.
影响图甲中曲线上的A点上下移动的主要外界因素是氧气浓度
B.
图乙中的数据需在适宜光照条件下测量
C.
图丙中两曲线右侧交点对应中B点，B点时影响光合作用速率的主要因素是光照强度
D.
图丙中若大棚设定的温度为两曲线右侧交点处的温度，每日光照必须长于12h植物才能生长
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举一反三
【单选题】I’ve got so many problems _______ today that I’m afraid I won’t have time to have lunch.
A.
to handle
B.
handle
C.
handling
D.
handled
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【单选题】— I wonder if you have a single room for tonight. —Sorry, I’m afraid we have _________at the moment.
A.
no
B.
none
C.
nothing
D.
no one
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【单选题】--Would you like ______ the History Museum with us tomorrow? --I’m afraid I won’t. I have been there twice.
A.
visited
B.
visit
C.
visiting
D.
to visit
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【单选题】下列哪个语句在Python中是非法的
A.
z=y=z=1
B.
x=(y=z+1)
C.
x,y=y,x
D.
x+=y
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【单选题】I’m afraid I won’t be available then. I _____ a friend off at 3:00 this afternoon.
A.
see
B.
am seeing
C.
will see
D.
will be seeing
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【单选题】— Hello, this is Shannon. I’m afraid I won’t be able to come to your office on time. —______ ! I’ll wait for you.
A.
That’s OK
B.
No doubt
C.
Cheer up
D.
Hurry up
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【单选题】—I’ve decided to quit this job, but I’m afraid I won’t be able to find a better one. — . You never know until you try.
A.
Good luck
B.
Never mind
C.
Forget it
D.
Go for it
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【单选题】下列哪个语句在python中是非法的
A.
x=float(y)
B.
x=int(y)+str(z)
C.
x=int(y)+int(z)
D.
x=float(y)+float(z)
查看完整题目与答案
【判断题】手心向内“V”字形手势表示胜利。( )
A.
正确
B.
错误
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【单选题】胸廓紫外线照射前野上界的水平为( )。
A.
肩
B.
锁骨上
C.
胸骨柄
D.
胸骨角
E.
锁骨下
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【单选题】I’ve got so many problems _______ today that I’m afraid I won’t have time to have lunch.
A.
to handle
B.
handle
C.
handling
D.
handled
查看完整题目与答案
【单选题】— I wonder if you have a single room for tonight. —Sorry, I’m afraid we have _________at the moment.
A.
no
B.
none
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【单选题】--Would you like ______ the History Museum with us tomorrow? --I’m afraid I won’t. I have been there twice.
A.
visited
B.
visit
C.
visiting
D.
to visit
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【单选题】下列哪个语句在Python中是非法的
A.
z=y=z=1
B.
x=(y=z+1)
C.
x,y=y,x
D.
x+=y
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【单选题】I’m afraid I won’t be available then. I _____ a friend off at 3:00 this afternoon.
A.
see
B.
am seeing
C.
will see
D.
will be seeing
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【单选题】— Hello, this is Shannon. I’m afraid I won’t be able to come to your office on time. —______ ! I’ll wait for you.
A.
That’s OK
B.
No doubt
C.
Cheer up
D.
Hurry up
查看完整题目与答案
【单选题】—I’ve decided to quit this job, but I’m afraid I won’t be able to find a better one. — . You never know until you try.
A.
Good luck
B.
Never mind
C.
Forget it
D.
Go for it
查看完整题目与答案
【单选题】下列哪个语句在python中是非法的
A.
x=float(y)
B.
x=int(y)+str(z)
C.
x=int(y)+int(z)
D.
x=float(y)+float(z)
查看完整题目与答案
【判断题】手心向内“V”字形手势表示胜利。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】胸廓紫外线照射前野上界的水平为( )。
A.
肩
B.
锁骨上
C.
胸骨柄
D.
胸骨角
E.
锁骨下
查看完整题目与答案
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