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【单选题】黄蜂的毒液呈碱性,若被黄蜂蜇了,涂抹下列物质可缓解疼痛的是 ( ) A .食盐水 (pH≈7) B .牙膏 (pH≈9) C .肥皂 (pH≈10) D .米醋 (pH≈3)
A.
B.
C.
D.
D
【单选题】She'd met lots of crazy musicians, but no one like Clayton. He was as obsessed as the others,but he had a quirky sense of humor, a slow ironic counterpoint to his own beliefs. And he didn't look quite...
A.
a social commentary on classical musicians in the early 1970s
B.
a story of how one individual inspired many others
C.
an introduction to a character through the perspective of another character
D.
an illustration of a strained but enduring relationship
【单选题】Despite not being terribly smart as individuals, wasp (黄蜂) colonies build and maintain a complex nest that lasts many generations. Just how these social wasps coordinate this task has always been a my...
A.
the wasps colonies are the ideal social colonies
B.
wasps have very strict hierarchical classes
C.
wasps’ behaviors depend on their, demands
D.
builder wasps have a higher status than pulp forager wasps
【单选题】Despite not being terribly smart as individuals, wasp (黄蜂) colonies build and maintain a complex nest that lasts many generations. Just how these social wasps coordinate this task has always been a my...
A.
are very smart as individuals
B.
are able to build and maintain complex nests
C.
drink more water than scientists have expected
D.
can learn from each other just like the bees