脑缺血、缺氧的初期（）A．细胞毒性脑水肿 B．血管源性脑水肿_爱下问搜题

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问题单项选择题

脑缺血、缺氧的初期（）

A．细胞毒性脑水肿

B．血管源性脑水肿

C．混合性脑水肿

D．先有细胞毒性后转化为血管源性脑水肿

E．脑水肿以脑灰质的肿胀甚于白质下列疾病多见于哪一种类型的脑水肿

答案

参考答案：A

完形填空

完形填空。

     Mrs White lives in the country , and she doesn't know London very well.
One day , she goes to London.She can't find her   l   . Just then she   2  a man
near a bus stop. "I can ask him the way, "  she says to     3    and asks, " Excuse me, can you    4    me the way to King Street?" The man smiles with     5
answer. He   6  know English. He speaks Japanese. He is a visitor. Then he   7  his hand into his pocket (口袋) ,  8  a piece of paper and let her   9   it. On
the paper are these words," Sorry ,I  10    English. "

( )1. A. street
( )2. A. looks at
( )3. A. herself
( )4. A. speak
( )5. A. not
( )6. A. don't
( )7. A. puts
( )8. A. bring out
( )9. A. to see
( )10.A. am not speak

B. way
B. watches
B. himself
B. say
B. an
B. doesn't
B. takes
B. take out
B. look at
B. don't speak

C. room
C. sees
C. myself
C. talk
C. no
C. isn't
C. brings
C. takes out
C. to look at
C. don't say

D. house
D. looks
D. themselves
D. tell
D. any
D. does
D. gives
D. takes away
D. watches
D. don't talk

选择题

用数学归纳法证明“当n为正奇数时，xⁿ+yⁿ能被x+y整除”的第二步是[ ]

A.假设n=2k+1时正确，再推n=2k+3时正确（其中k∈N*）

B.假设n=2k-1时正确，再推n=2k+1时正确（其中k∈N*）

C.假设n=k时正确，再推n=k+1时正确（其中k∈N*）

D.假设n≤k（k≥1）时正确，再推n=k+2时正确（其中k∈N*）