题目

已知，且，则的最小值为A. 13 B. 14 C. 15 D. 16 答案：【答案】B【解析】试题，当且仅当时等号成立，取得最小值14 (阅读理解) One morning the students of Class Three, Grade One are having an English lesson. Mr. Zhang finds Li Lei doesn’t listen to him. He goes to Li Lei and has a look. Oh, Li Lei is drawing a boy. The teacher asks Li Lei to stand up.“Do you like drawing?” “Yes, Mr. Zhang,”answers Li Lei,“And I draw very well.” “You can draw after class. I think,”says the teacher,“You can’t draw anything in class.” “You are wrong, Mr. Zhang. I can draw when I have an art class. And I like it very much.”says Li Lei with a smile. “You are right,”says the teacher. “And you must draw one hundred boys before the class is over,”says the teacher angrily. After five minutes, Li Lei finishes drawing and puts up his hand. The teacher looks at the picture and asks.“I ask you to draw one hundred boys. But you draw only two boys. One is standing at the door and the other one is standing in front of the window. Where are the others?”(1) Mr. Zhang is　____　teacher and Li Lei does well in　　_______　. A.a Chinese,lessons B.a math, drawing C.an art, football D.an English, drawing [　　] (2) The sentence“You can’t draw anything in class.”in paragraph 4 means　_____　. A. the boy can draw nothing B.the boy can’t draw in art class C.the boy can’t draw in an English class D.the boy likes drawing after class [　　] (3) Li Lei draws two boys 　_______　. A.on the paper B.on his desk C.on the blackboard D.on the wall [　　] (4) What do you think the teacher will do after class? A. He will let the boy go home. B. He will ask the boy to go to his office. C. He will praise(表扬) Li Lei. D. He will ask Li Lei to dinner. [　　] (5) From this story we know that Li Lei is a ________　boy. A.good B.clever C.bad D.short [　　]