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【单选题】
以下用于设置背景图片位置的属性是( )。A.
background-color
B.
background-image
C.
background-repeat
D.
background-position
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【简答题】简述球果类种实调制时如何脱粒干燥 ?
【单选题】This is interesting movie and it’s also most interesting one I’ve ever seen.
A.
an，a
B.
an, the
C.
a, the
【单选题】A 70.0-kg man jumps 1.00 m down onto a concrete walkway. His downward motion stops in 0.0200 seconds. If he forgets to bend his knees, what force is transmitted to his leg bones?
A.
15500 N
B.
7010 N
C.
4900 N
D.
3500 N
E.
9000 N
F.
22000 N
G.
26000 N
H.
9800 N
【单选题】John had not hurt his leg, he would have won the race
A.
If
B.
Since
C.
Though
D.
When
【单选题】My parents bought me some books, but ______ was interesting.
A.
neither of which
B.
none of them
C.
none of which
D.
either
【单选题】If Peter had not hurt his leg, he ______ the important meeting last week.
A.
will attend
B.
attended
C.
would have attended
D.
would attend
【单选题】（）he had not hurt his leg,John would have won the race.
A.
If
B.
Since
C.
Thongh
D.
When
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