题干

2014年西非地区爆发了埃博拉疫情.埃博拉病毒(EBV)是一种RNA病毒,侵入人体后发生免疫反应,下列叙述正确的是(  )

A:EBV被吞噬细胞特异性识别,产生特异性免疫反应

B:EBV刺激T细胞分泌淋巴因子与该病毒结合

C:在T细胞和EBV的共同刺激下,B细胞才能增殖、分化为浆细胞

D:细胞免疫产生的效应T细胞可识别并破坏被EBV侵染的细胞

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答案(点此获取答案解析)

D

同类题4

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

     Here are two places that you may want to pay a visit to.

Sark, Channel Islands

     This is one of the few places in the world where tradition still stands and the traditional ways are fully respected. The roads here remain not cemented (铺水泥), and they are completely dark at night as there are no street lights. The citizens of Sark are not allowed to drive cars, and if they do, they have to keep them outside Sark. The transportation you can use in Sark includes your legs, bicycles or a horse-drawn carriage. There are no motor vehicles here.

      There are many activities you can enjoy here during the day, but when the night comes, the only thing you can do outside is look at the sky, which is really great. Because of the lack of artificial lights, the stars are seen very clearly.

Hyderabad, India

      This southeastern city of India was the city where one of the wealthiest people in the world lived, Mir Osman Ali Khan. Now this city is the place where many global IT brands hold their head offices. But it hasn’t lost its historic looks, as it remains surrounded by ancient stones, and the modern houses recently built are surrounded by traditional gardens and lakes. From the great hotel Taj Falaknuma Palace you can see the Old City where the old Indian tradition is well preserved.

     The best time to travel to Hyderabad depends on whether you are going for the city itself, or you wish to go to some of the festivals that take place here. The Hyderabad Literary Festival takes place from the 23rd to the 26th of January, while a festival celebrating various cultures, the Deccan Festival, happens from February 25 to March 1.