根据下列句子及所给汉语注释，写出空缺处各单词的正确形式，每空只写一词。

1. He is an_________(诚实的)boy, and he never tells lies.

2. All visitors live on the _______ (第三) floor of this building.

3. Listen carefully in class and you are sure to understand the teacher       (容易).

4. We often get       (信息) by reading newspapers, magazines and all kinds of books.

5. It was getting dark and he finally_________(赶上) the last bus to go home.

女性，65岁，腹胀痛，腹泻便秘交替月余伴里急后重感，无鲜血便。体格检查：腹平软，未及包块，左锁骨上，腹股沟淋巴结未触及

进一步检查应首先采用（）

A.肛门指检、直肠镜检

B.大便常规加涂片

C.腹部B超

D.腹部X线平片

E.钡剂灌肠