具有趋化作用的细胞因子是 A.IL-2 B.IL-3 C.IL-4 D.IL-8 E

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问题:

具有趋化作用的细胞因子是

A.IL-2
B.IL-3
C.IL-4
D.IL-8
E.IL-10

考点:基础医学医学免疫学细胞因子
题型:单项选择题

---It’s a pity that the trees are going to die.

---_____ more attention, they could have grown better.

A.Giving

B.Given

C.To give

D.Give

题型:单项选择题

氨基糖苷类抗生素的抗菌机制是()

A.抑制细菌细胞壁的合成

B.干扰细菌的叶酸代谢

C.作用于细菌核糖体50S亚基,干扰细菌蛋白质的合成

D.作用于细菌核糖体30S亚基,干扰细菌蛋白质的合成

E.影响细菌蛋白质合成的各个环节

题型:单项选择题

The English language started about 1500 years ago in England. Three groups of people came to the country. They were the Angles, the Saxons, and the Jutes. These three groups brought their languages with them to England. After some time, the three languages became one new language—English. The name "English" comes from the Angles. They lived in most of England. "England" means "Angle Land" or "Country of the Angles".

  The language that we speak today—Modern English—is not the same as the English that people used 1500 years ago, including Old English(before ll50)and Middle English(up till 1500). That language—Old English—sounds different, and it has some different rules of grammar. There were only a few thousand words in Old English. But Modern English does come from Old English, and it is still like it in many important ways.

小题1:When did Modern English start?

A.About the year 1150.

B.Before the year 1500.

C.Between the 12th century and the 16th century.

D.About 1500 years ago.小题2:How many languages did Old English come from?

A.One.

B.Two.

C.Three.

D.Four.小题3:Which language did the name "English" come from?

A.Modern English.

B.The Angles.

C.The Jutes.

D.The Saxons.小题4:According to the passage, Modern English differs from Old English in ________.

A.grammar  

B.pronunciation

C.words

D.All of the above小题5:Which of the following is TRUE?

A.Modern English has nothing to do with Old English.

B.Modern English has more words than Old English.

C.Modern English has a vocabulary(词汇量)twice as large as old English.

D.There is no difference between Old English and Middle English.

题型:单项选择题

下列哪项不符合窒息时血液生化和代谢的改变()

A.高钙血症

B.混合性酸中毒

C.低钠血症

D.低血糖

E.高胆红素血症

题型:单项选择题

54年宪法规定,全国人大的常设机关是全国人大()。

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