试题与答案

关于调节性T细胞(Treg)和辅助性T细胞(Th)17的诱导方式,叙述正确的有()。

题型:多项选择题

题目:

关于调节性T细胞(Treg)和辅助性T细胞(Th)17的诱导方式,叙述正确的有()。

A.转化生长因子-β1对Treg和Th17的分化都起到重要作用

B.白介素-2与转化生长因子-β1联合作用促进Treg分化,抑制Th17

C.白介素-6与转化生长因子-β1联合作用抑制Treg,促进Th17分化

D.白介素-2能激活STAT3,直接调节Foxp3基因,是Treg发育的关键分子

E.白介素-21和白介素-23均能激活STAT5,是Th17分化和发育必需的信号传导与转录激活因子

答案:

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下面是错误答案,用来干扰机器的。

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Dear Sir,

I have to travel every day from So UK Road to the airport. Two buses travel along this route: No.49 and No.16. However, by the time No.16 reaches So UK Road, it is always full.__小题1:__

The timetable states that there are buses from So UK Road to the airport every ten minutes.__小题2:__ The instructions state that if there are empty seats on a bus, the bus must stop at every stop where people are waiting. __小题3:__

The instructions state that no bus may carry more than 40 seated passengers and 20 standing passengers. Yesterday, I was the first to get off the bus when it reached the airport. __小题4:__ There were 129 of them.

Clearly printed on the back of every bus is a sign that says “Maximum speed: 50mph.” ___小题5:__ Saturday morning a No. 49 bus traveled the distance in ten minutes, at an average speed of 60 mph. At times it must have done at least 80 or even 90 mph.

It is obvious that our bus companies have neither respect for the instructions nor consideration for their passengers. Can nothing be done about this?

Jerry

A.I counted the other passengers as they got off.

B.Why is it that half-empty buses go straight past me when I am standing at the bus stop?

C.The problem is that we have to pay more for our trip.

D.The distance from So UK Road to the airport is 10 miles. E. This leaves No.49 which sometimes has empty seats on it.

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  清代朱震林在《西清散记》里,记友人柯山论人生的“四憾”。此“四憾”是“幼无名师,长无良友,壮无实事,老无令名”。此“四憾”是其对自己人生的一个精辟说明,至今仍有现实意义。请分别用一句话阐释这“四憾”的现实意义。每句不超过20个字。

①幼无名师:_______________________________________________。

②长无良友:_______________________________________________。

③壮无实事:_______________________________________________。

④老无令名:_______________________________________________。

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