皮皮学，免费搜题
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【单选题】
酶标记抗体免疫组化技术的直接法不具备下列哪项A.
操作简便
B.
特异性强
C.
敏感性低
D.
抗体种类有限
E.
特异性差
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皮皮学刷刷变学霸
举一反三
【单选题】（高中）下列哪个选项是空缺处的最佳答案？ --Sam speaks _________ English like a native. I always admire him. --Now he is learning _________ more difficult language ---Arabic.
A.
an； a
B.
/； the
C.
/； a
D.
the； a
【简答题】Bob and San are my classmates. Bob is as 78.________(tall)as Sam, and they 79.________([bəʊθ])have short hair. But Bob is a little 80._________(thin)than Sam. Bob is more 81.________(外向的)and friendlie...
【简答题】Laura: Luis speaks Spanish.Jiao: Oh, really? Laura: Yes, he ________________ three languages - Spanish, English, and Portuguese.2. Chris: Does Maggie have any brothers or sisters?Emi: Yes, she _______...
【简答题】阅读短文，判断句子正误，对的打“√”，错的打“×'。 This is my classroom. It's bright and clean. But it is small. There are twenty-three desks and chairs in it . They are new. You can see two girls and a boy in it. The boy is...
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