单选题:From this passage we know that________.

题目内容:
From this passage we know that________. A.[ A ] every American cannot have guns
B.[ B ] only soldiers and police can have guns
C.[ C ] every American citizen can own guns
D.[ D ] teachers have no money to buy guns
参考答案:
答案解析:

扁平苔藓可出现

扁平苔藓可出现 A.眼部损害 B.牙龈增生 C.黏膜苍白 D.疱性榻害 E.狼疮细胞

查看答案

有关酶的叙述,恰当的是

有关酶的叙述,恰当的是 A.对底物都有绝对专一性 B.生物体内的无机催化剂 C.能显著地降低反应活化能 D.催化活性都需要特异的辅酶 E.在体内发挥催化作用时,

查看答案

含有两个羧基的氨基酸是

含有两个羧基的氨基酸是 A.赖氨酸 B.酪氨酸 C.苏氨酸 D.谷氨酸 E.丝氨酸

查看答案

The main idea of the second paragraph shows us________.

The main idea of the second paragraph shows us________.A.[ A ] some examples of

查看答案

一个汉字的机内码与国标码之间的差别是

一个汉字的机内码与国标码之间的差别是

查看答案