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【简答题】
如图是氧元素、铝元素在周期表中的部分信息,以及四种粒子的结构示意图. 根据图示回答下列问题: (1)氧原子的原子核内质子数是______,其相对原子质量是______; (2)写出甲和乙形成化合物的化学式______; (3)在A、B、C、D四种粒子中,属于同种元素的是(填字母序号)______,该元素的名称是______; (4)C、D粒子中属于金属元素的是(填字母序号)______,D粒子中X=______.
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举一反三
【判断题】Diego really wants to make friends with Manfred and Sid.
A.
正确
B.
错误
【单选题】The publishing house has the _______ right to print Mo Yan's book.
A.
exclusive
B.
flexible
C.
virtual
D.
overall
【简答题】A.He wasn't offered the job in the bookstore. B.He really wants to work in the bookstore. C.He didn't know where the bookstore was. D.He declined the bookstore job once.
【单选题】My brother really wants a dog, but my mother won't _ him have one. [     ]
A.
ask
B.
let
C.
allow
【简答题】What Garret Jones really wants is to ______.
【单选题】数控机床进给系统的机械传动结构中, 具有滚动摩擦的导轨( )
A.
静压导轨
B.
滚动导轨
C.
塑料导轨
D.
气动导轨
【单选题】数控机床进给系统的机械传动结构中, 具有滚动摩擦的导轨( )
A.
滚动导轨
B.
静压导轨
C.
塑料导轨
D.
气动导轨
【单选题】Diego wonders if the conversation on the tape really took ______.
A.
sides
B.
place
【单选题】Print publishing continues to ( ) in the U.S.
A.
Increase
B.
Fluctuate
C.
Decrease
D.
Stabilize
【判断题】演员不需要与摄影机的运动方式进行配合,只需要完成表演即可。()
A.
正确
B.
错误
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