网址:http://m.1010jiajiao.com/timu_id_2247460[举报]
(1)物质B的化学本质是 ______________。
(2)物质A为____________,是由效应T细胞分泌,又能诱导生成更多的效应_________ 细胞,这是一种____________调节机制。
(3)效应T细胞与靶细胞密切接触,激活靶细胞内的_____________,并使其通透性、渗透压发生改变,最终___________,释放出病毒与抗体结合,使病毒失去_________________________宿主细胞的能力。
(4)T细胞由__________分化而来,成熟于______________,并随血液和淋巴在体内流动。T细胞在人体免疫应答中除具有图示增殖分化的功能外,还能 ______________。 查看习题详情和答案>>
_1_ name is Wei Hua, I _2_ a girl. My_3_ name is Hua and last name _4_
Wei. I’m a _5_ . My teacher is Mr Li, he is a good teacher. Tom is my _6_,
_7_last name is Green Tom and I _8_ good friends. We are in Class 3, Grade 1.
Tom_9_ a nice mother, _10_father is good, too.
【小题1】A. I B.His C.My
【小题2】A.is B.am C.are
【小题3】A. Last B.first C.family
【小题4】A.is B,are C.does
【小题5】A.student B.students C.some shudents
【小题6】A.friends B.friend C.meny friend
【小题7】A. My B. He C. His
【小题8】A.is B.Are C.Isn’t
【小题9】A.have B.has C.is
【小题10】A.He B.His C.They
1 is becoming popular these days. Many of us run for our 2 . 3 say many of the health problems come from these 4 habits: eating too much, 5 too much, smoking cigarette, and not having enough 6 . Doctors tell us, ‘Eat less, don’t smoke, 7 exercise more.’ Running is a good exercise 8 it helps build a strong heart. It also helps most people
9 weight. 10 80-year-old woman runs three times a week. She is getting 11 . Running is good for health in other 12 , too. Many runners say running makes colds and other small health problems 13 . ‘Running is my doctor,’ says a man. Running can also make people feel 14 . So today men and women of all 15 enjoy running.
| 【小题1】 |
|
| 【小题2】 |
|
| 【小题3】 |
|
| 【小题4】 |
|
| 【小题5】 |
|
| 【小题6】 |
|
| 【小题7】 |
|
| 【小题8】 |
|
| 【小题9】 |
|
| 【小题10】 |
|
| 【小题11】 |
|
| 【小题12】 |
|
| 【小题13】 |
|
| 【小题14】 |
|
| 【小题15】 |
|
1 Miss Gao’s class there are 2 students. There are twenty-four boys, and twenty-two girls. 3 of the boys is 4 . His name is Jim. All 5 boys are Chinese . All of the Chinese students are Young Pioneers. In the class there are two 6 girls. They are 7 . 8 names are Lily and Lucy. The other girls are Chinese. We are 9 friends. There’s 10 difference, American-English-Chinese.
| 【小题1】 |
|
| 【小题2】 |
|
| 【小题3】 |
|
| 【小题4】 |
|
| 【小题5】 |
|
| 【小题6】 |
|
| 【小题7】 |
|
| 【小题8】 |
|
| 【小题9】 |
|
| 【小题10】 |
|