根据汉语完成句子。

1. This is an _____ (有教育意义的) book.

2. Do you think the sights there are _____ (迷人的).

3. They decided to _____ (长途跋涉) though the jungle.

4. It's quite _____ (便利) to take train to many places.

5. There are lots of _____  _____ (景点) around my hometown.

先天缺乏NADH-高铁血红蛋白还原酶患者对亚硝酸盐类十分敏感，属于（）

A.迟发性毒性作用

B.过敏性反应

C.高敏感性

D.速发性毒性作用

E.特异体质反应