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【多选题】
补全对话 从所给的选项中选择正确的选项填空,使对话完整,有一项多余。 Kate:You're late today!I have waited here for twenty minutes. Paul:I'm really sorry. ________(1) Kate:Why didn't you drive your car? It's faster than taking a bus. Paul:________(2) Kate:Really? But why? Paul:Becaus e I think it's our duty to care for our environment. Kate:You have changed a lot.________(3) Paul:I joined a volunteer club—Green Helper. The environmental problem in our country is becoming more and more serious. It is time to take action to protect the environment, such as taking shorter showers, recycling books and paper, ________(4) and so on. Kate:Well, they are easy and useful. But it's not convenient to go to work without driving a car. Paul:________(5) Kate:Good idea. You're living a lowcarbon(低碳)life and it's also a good way to exercise.A.
. What made you do that?
B.
. I had to wait for a bus for a long time.
C.
. What's wrong with your car?
D.
. I am going to buy a bike and then ride to work.
E.
. I won't drive unless it is necessary.
F.
. turning off the lights before leaving
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举一反三
【单选题】●Every Web site and electronic device connected to the Internet must possess a unique (75). (75)
A.
E-Mail
B.
IP address
C.
server
D.
NOS
【简答题】影响维生素B12吸收的胃腺细胞是（ ）。
【简答题】已知x=1是不等式k 2 x 2 -6kx+8≥0（k≠0）的解，则k的取值范围是______．
【简答题】已知函数 f(x)= 4 x +k? 2 x +1 4 x + 2 x +1 ．若对任意的实数x 1 ，x 2 ，x 3 ，不等式f（x 1 ）+f（x 2 ）＞f（x 3 ）恒成立，则实数k的取值范围是______．
【单选题】关于内因子叙述错误的是:
A.
由胃腺的壁细胞分泌
B.
促进维生素B12吸收
C.
保护维生素B12不被消化液破坏
D.
保护胃黏膜不受盐酸侵蚀
E.
缺乏时，会影响红细胞生成
【简答题】、已知2k－3x 2+2k >1是关于x的不等式，那么k=______不等式的解集是_______
【单选题】Every Web site and electronic device connected to the Internet must possess a unique()
A.
E-Mail
B.
IP address
C.
server
D.
NOS
【单选题】已知 x = 1 是不等式 k 2 x 2 - 6 kx + 8 ≥ 0 的解 , 则 k 的取值范围为 ( )
A.
( － ∞ ， 2 ] ∪ [4 ， ＋ ∞ )
B.
（ 2,4 ）
C.
D.
( － ∞ ， 2) ∪ ( 4 ， ＋ ∞ ）
【简答题】已知函数f(x)= ，若对任意的实数x 1, x 2 ,x 3, 不等式f(x 1 )+f(x 2 )>f(x 3 )恒成立，则实数k的取值范围是 ．
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