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【判断题】
角量子数反映了电子在核外空间出现概率最大区域离核的远近，是决定电子能量高低的主要因素。A.
正确
B.
错误
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举一反三
【单选题】You’ve been watching _______ 8:00. It’s time to do your homework.
A.
at
B.
by
C.
for
D.
since
【单选题】听力原文：W：You look great since you've been taking the Yoga exercise. M: Thanks! I've never felt better in my life. Q: What does the man imply? (16)
A.
He has never felt good in his life.
B.
The Yoga has improved his health.
C.
He is unhappy about his life.
D.
He is thinking of taking a Yoga exercise.
【单选题】– I’ve been trying to call you since Sunday night, but there was no answer. – _______________.
A.
My phone was out of order. I didn’t realize it until this morning.
B.
Did anybody come to visit you over the summer?
C.
Where have you been working since you quit your job at the bank?
【单选题】德国人从事商务活动时,特别注重礼节形式,下面哪些是描述不恰当的( )
A.
打招呼要称呼他们的头衔，某博士、某某经理等
B.
同德国人谈话时，可以谈其他人或国家政事
C.
德国人信守承诺，合同一旦签订，就不必担心对方违约
D.
不可随意直呼其名
【简答题】阅读理解。 You've just come home, after living abroad for a few years. Since you've been away, has this country changed for the better-or for the worse? If you've just arrived back in the UK after a fortni...
【单选题】— ____ have you been at this factory? — I've been here since 1993. [ ]
A.
When
B.
How long
C.
What time
D.
How often
【单选题】听力原文：M: Hi, I've been looking for you since the morning. Where have you been? W: Yeah, I don't feel like hanging out with the crowd any more, especially since Jane stopped coming to school. M: It's su...
A.
How to get a part-time job.
B.
A terrible accident on campus.
C.
How to help a classmate.
D.
Independence of college students.
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