能阻碍碘离子氧化成活性碘的药物是()
A.小剂量碘
B.硫脲类药物
C.125I
D.甲状腺素
E.大剂量碘
参考答案:B
设方程x+y-z=e2确定了隐函数z=z(x,y),则=()。
A.A
B.B
C.C
D.D
根据汉语提示,完成下列句子
1.我不能使我的发音正确,因此感到非常遗憾。
I'm very sorry that I can't ____my _______.
2.首先,我们在课堂上听懂老师的话是非常重要的。
___, it's very important for us to understand the teacher in class.
3.我通过和同伴编会话的方式学习英语。
I learn English conversations with my partner.
4.英语老师经常让我们在课堂上做许多的语法笔记.
Our English teacher often asks us to grammar in class.
5.这些是生词,请查词典.
These are new words. please the dictionary.