【单选题】According to the passage, too much caution in the applying of computers would______.
A.
hinder our research of society
B.
result in some economic problems
C.
cause more pressure of human freedom
D.
bring about some negative effects
【单选题】The murderer was brought in , with his hands _______ be hind his back .
【简答题】Cats hind their paws.
【简答题】在细菌质粒pBP1的四环素抗性基因tet R 的中间有一个Hind Ⅲ的切点。用Hind Ⅲ切割果蝇基因组DNA,以pBP1为载体构建基因组文库。分子杂交证明克隆15带有果蝇的目的基因。用Hind Ⅲ和EcoR Ⅴ对克隆15进行了酶切分析,电泳结果如图Q18.1(用酶切的pBP1质粒DNA作对照),旁边标出了片段的大小。 图Q18.1酶切电泳图谱 1~2:Hind Ⅲ切割;3~4:EcoR Ⅴ切割...
【单选题】Hares generally have longer ears and hind legs than rabbits and move by jumping ______ running.
【简答题】限制酶是一种核酸内切酶 , 可识别并切割 DNA 分子上特定的核苷酸序列 , 下图为四种限制酶 BamH I , EcoR I , Hind III 和 Bgl II 的识别序列和切割位点: 切割出来的 DNA 黏性末端可以互补配对的是 ( ) A . BamH I 和 EcoR I B . BamH I 和 Hind III C . BamH I 和 Bgl II D . EcoR I 和 Hi...
【简答题】支票在其票据交换区域内可以( ),但用于( )的支票不能背书转让