一个角为28°38′46″，则它的余角的补角为___________.

读下图，回答下列各题：（6分）

新华网莫斯科3月22日电：中国国家 * * 习 * * 22日抵达莫斯科，开始对俄罗斯进行国事访问，双方将签署经贸、能源、投资、地方、人文、环保等领域合作文件。访问俄罗斯后，习 * * 还将对坦桑尼亚、南非、刚果共和国进行国事访问，并出席在南非德班举行的金砖国家领导人第五次会晤。

（1）习 * * 出行路线先后除亚洲外还经过了哪几个大洲？（2分）

（2）我国与习 * * 所访问的国家合作被称为            （1分）

（3）3月27日，金砖国家领导人第五次会议在南非德班举行，此时达州市          

（昼夜长短情况）。访问的最后一个国家所在地形区是               ，其所在大洲气候分布特点是                    。（3分）

打开无菌溶液需检查核对的内容有（）。

A.瓶签

B.使用有效期

C.瓶盖有无松动

D.瓶口有无裂缝

E.溶液有无沉淀、浑浊、变色

Proudly reading my words, I glanced around the room, only to find my classmates with big smiles on their faces and tears in their eyes. Confused, I glanced toward my stone-faced teacher. Having no choice, I slowly raised the report I had worked on, hoping to hide myself. “What could be causing everyone to act this way?”

Quickly, I flashed back to the day Miss Lancelot gave me the task. This was the first real task I received in my new school. It seemed simple: go on the Internet and find information about a man named George Washington. Since my idea of history came from an ancient teacher in my home country, I had never heard of that name before. As I searched for the name of this fellow, it became obvious that there were two people with the same name who looked completely different! One invented hundreds of uses for peanuts, while the other led army across America. I stared at the screen, wondering which one my teacher meant. I called my grandfather for a golden piece of advice: flip (掷) a coin. Heads—the commander, and tails—the peanuts guy. Ah! Tails, my report would be about the great man who invented peanut butter, George Washington Carver.Weeks later, standing before this unfriendly mass, I was totally lost. Oh well, I lowered the paper and sat down at my desk, burning to find out what I had done wrong. As a classmate began his report, it all became clear, “My report is on George Washington, the man who started the American Revolution.” The whole world became quiet! How could I know that she meant that George Washington?

Obviously, my grade was terrible. Heartbroken but fearless, I decided to turn this around. I talked to Miss Lancelot, but she insisted: No re-dos; no new grade. I felt that the punishment was not justified, and I believed I deserved a second chance. At last, I worked very hard for the rest of the school year.

Ten months later, that chance came as I found myself sitting in the headmaster’s office with my grandfather, now having a completely different conversation. I smiled and flashed back to the embarrassing moment at the beginning of the year as the headmaster informed me of my chance to skip the sixth grade. Justice is sweet!

小题1: What did the author’s classmates think about his report?

A．Complex.

B．Funny.

C．Boring.

D．Puzzling.小题2: Why was the author confused about the task?

A．He was unfamiliar with American history.

B．He followed the advice and flipped a coin.

C．He forgot his teacher’s instruction.

D．He didn’t know why the teacher gave such a task.小题3:In the end, the author turned things around _______.

A．by redoing his task

B．through his own efforts

C．with the help of his grandfather

D．under the guidance of his headmaster

我国商标法规定不得作为商标使用的标志有（）。

A．同我国中央国家机关所在地标志性建筑的名称、图形相同的

B．同外国各州省行政区划名称相同的

C．同“红新月”的名称、标志相同或相近的

D．仅有本商品的通用名称的

隧道明挖法施工时，基坑底以下的地下水位与基坑底之间的距离不超过（）时，需采取降水措施。

A．0.5 m

B．1.0 m

C．1.5 m

D．2.0 m