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【单选题】
记等差数列 的前n项和为 ,若 , ,则该数列的公差d为( )A.
7
B.
6
C.
3
D.
2
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反馈参考答案：
举一反三
【单选题】9个月男孩,反复抽搐4次,智力差,表情呆滞。皮肤,头发黄色,尿有霉臭味。为明确诊断,应选择的检查是
A.
脑电图
B.
腕部摄片
C.
染色体检查
D.
血T3、T4、TSH
E.
尿三氯化铁试验
【简答题】阅读表达。 It's natural to greet friends with a smile and a wave. When you do this, your face and body work together to show your friends that you're happy to see them. But what happens if your face and bo...
【单选题】Section B Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. The dialogues and que...
A.
He is often late.
B.
He used to be on time.
C.
He is never late.
D.
He is always on time.
【单选题】9个月男孩，反复抽搐4次，智力差，表情呆滞，皮肤嫩白，头发黄色，尿有霉臭味。为明确诊断，应选择下列哪项检查
A.
血T3、T4red、TSH
B.
染色体检查
C.
尿三氧化铁试验
D.
脑电图
E.
腕部摄X线片
【单选题】9个月男孩，反复抽搐4次，智力差，表情呆滞，皮肤嫩白，头发黄色，尿有霉臭味，为明确诊断，应选择下列哪项检查
A.
血T3T4、TSH
B.
染色体检查
C.
尿三氯化铁试验
D.
脑电图
E.
腕部摄片
【简答题】阅读理解。 I have some boxes. One is small. It's blue. One is full (满的) of books.It's red. The third is new. There is nothing in it. There are some old bottles in a big blue box. Today, I want to put the r...
【简答题】完形填空。 Today is June 4th it's 1 fine day. It is Betty's birthday. She comes 2 and sees a new red box on her bed. She opens 3 . There is nothing but a piece of paper 4 it! Betty takes it out and 5 :'Dea...
【单选题】She was glad of the lake. It's soft dark water helped to soothe and quiet her mind. It took her away from the noisy, squawkish world of the cat-walk and let her lie untroubled at its side, listening o...
A.
model
B.
teacher
C.
singer
D.
banker
【单选题】Section B Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. The dialogues and que...
A.
He is often late.
B.
He used to be on time.
C.
He is never late.
D.
He is always on time.
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