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【判断题】
免疫记忆是永久的。
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】— Let's go for a walk,shall we? — It's too late now; _____,it's beginning to rain. [     ]
A.
in addition
B.
in a word
C.
as a result
D.
in general
【单选题】- Jill, you look tired. Let's go for a walk. - _________
A.
Thank you, I'm really hungry.
B.
That's a good idea.
C.
You are welcome.
D.
You're wrong.
【单选题】Let's go for a walk, _____ ?
A.
shall we
B.
will you
C.
won't you
D.
shan't we
【单选题】Let's go for a walk,________ ?
A.
shall we
B.
do we
C.
would we
D.
should we
【单选题】Let's go for a walk when we___this work.
A.
will finish
B.
are finishing
C.
finished
D.
finish
【单选题】叶片呈心形,基部与托叶合生成鞘状,搓破有鱼腥气的药材是
A.
薄荷
B.
广藿香
C.
青蒿
D.
穿心莲
E.
鱼腥草
【单选题】It's fine today. Let's go for a walk, ____?
A.
will you
B.
can we
C.
shall we
【单选题】单项选择。 — Meimei, let's go for a walk. — Good idea. But I must _____ my parents first. [     ]
A.
hear
B.
ask
C.
listen
D.
listen to
【单选题】听力原文:M: What shall we do this weekend? W: Let's go for a walk. M: Where to go, than? W: Let's go to the new forest. We haven't been there too long. M: That's a good idea. I'll pick you up at about ten...
A.
Climb the mountains.
B.
Go out for a walk to the new forest.
C.
Go sightseeing in a car.
D.
Have a wonderful meal at the weekend.
【简答题】近日墨西哥及美国的部分地区暴发猪流感疫情,4月25日世界卫生组织对外宣布,墨西哥因感染猪流感致死的人数已经达到68人,全国范围内的确诊病例有1004人.据专家称,此次的猪流感病毒代号为H1N1亚型猪流感病毒新毒株,它包含人流感病毒、北美禽流感病毒和北美、欧洲、亚洲三类猪流感病毒的基因片段.虽然世界卫生组织曾经发现过混合了人、禽和猪三种流感病毒的毒株,但从未见过这种跨洲组合的猪流感病毒.世界卫生组织...
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