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【单选题】
Which is correct according to the second paragraph?A.
Mosquitoes carrying West Nile virus was spotted last year.
B.
Death caused by West Nile virus has exceeded 1000.
C.
West Nile virus has circulated in US for about 10 years.
D.
More than 200 birds are reported to die of West Nile virus.
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举一反三
【单选题】In the first paragraph, speaking the way of boarding the plane, the author tends to support the idea of_____________.
A.
a free-for-all boarding
B.
boarding by window, middle seat or aisle
C.
boarding by zones
D.
none of the above
【简答题】生活中下列物质，易溶于水而形成溶液的是（ ） A．植物油 B．食盐 C．面粉 D．奶粉
【单选题】Where can the tourists get the boarding place?
A.
Flight ticket
B.
Boarding pass
C.
Passport
D.
Visa