关于旋毛形线虫的描述正确的是A.中间宿主和终宿主为统一宿主,完成生活史不需要更换宿主B.幼虫寄
关于旋毛形线虫的描述正确的是
A.中间宿主和终宿主为统一宿主,完成生活史不需要更换宿主
B.幼虫寄生在宿主的肠道
C.人是旋毛形线虫的唯一终宿主
D.旋毛虫病是人兽共患寄生虫病
E.以上都不是
关于旋毛形线虫的描述正确的是
A.中间宿主和终宿主为统一宿主,完成生活史不需要更换宿主
B.幼虫寄生在宿主的肠道
C.人是旋毛形线虫的唯一终宿主
D.旋毛虫病是人兽共患寄生虫病
E.以上都不是
第1题
A、full of ambition
B、self-disciplined
C、full of enthusiasm
D、knowledgeable
第2题
A、Looking back in retrospect
B、a summer of my childhood
C、outdoors getting into trouble
D、most of the day
第3题
请阅读短文,完成第题。
Looking back on my childhood, I am convinced that naturalists are born and not made.Although we were brought up in the same way, my brothers and sisters soon abandoned their pressed flowers and insects. Unlike them, I had no ear for music and languages. I was not an early reader and I could not do mental arithmetic.
Before World War I we spent our summer holidays in Hungary. I have only the dim memory of the house we lived in, of my room and my toys. Nor do I recall clearly the large family of grandparents, aunts, uncles and cousins who gathered next door. But I do have a crystal-clear memory of dogs, the farm animals, the local birds and above all, the insects.
I am a naturalist, not a scientist. I have a strong love of the natural world, and my enthusiasm has led me into varied investigations. I love discussing my favorite topics and enjoy burning the midnight oil, reading about other people"s observations and discoveries. Then something happens that brings these observations together in my conscious mind. Suddenly you fancy you see the answer to the riddle, because it all seems to fit together. This has resulted in my publishing 300 papers and books, which some might honor with the title of scientific research.
But curiosity, a keen eye, a good memory and enjoyment of the animal and plant world do notmake a scientist; one of the outstanding and essential qualities required is self-discipline, a qualityI lack. A scientist can be made. A naturalist is born. If you can combine the two, you get the best of both worlds.
According to the author, a born naturalist should first of all be 查看材料
A.full of ambition
B.self-disciplined
C.full of enthusiasm
D.knowledgeable
第4题
I always______my childhood as the happiest time of my life.
A.look out for
B.look back on
C.look forward to
D.look around for
第5题
A、am looking
B、had been looking
C、have been looking
D、look
第6题
A.A.looking towards
B.B.looking back on
C.C.playing back
D.D.reminding of
第7题
A、had looked
B、have been looking
C、am looking
D、was looking
第9题
一May I help you find something, or are you just looking?
—____ .
A. I am trying to find something for my daughter.
B.No, dinner is nearly ready.
C.That's right. I'll have that blue one
第10题
I love my home-town _____ I spent my childhood .
A.where
B.which
C.when
D.that
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