搜题请搜索小程序“爱下问搜题”
问题 多项选择题

摄影构图应做到（）。

A.必须有一个主题能够表达作者创作意图的“中心思想”

B.把观众的趣味中心集中到被摄中心——被摄主体上

C.必须画面简洁，只拍摄与主体密切相关的内容，排除或压缩分散注意力的内容

D.控制景深和虚实

答案

参考答案：A, B, C

单项选择题

注射大量破伤风抗毒素的日的是

A．抑制破伤风杆菌的生长
B．控制和解除痉挛
C．中和游离的毒素
D．减少毒素的产生
E．中和游离与结合的毒素
查看答案
单项选择题

In the second half of each year, many powerful storms are born in the tropical Atlantic and Caribbean seas. Of (91) , only about half a dozen (92) the p, circling winds of 75 miles per hour or more that give them hurricane status, and several usually (93) their way to the coast. There cause millions of dollars of (94) , and bring death to (95) numbers of people.
The great storms that hit the coast start (96) innocent circling disturbances hundreds, even thousands of miles out to sea. As they travel aimlessly over water (97) by the summer sun, they are carried westward by the (98) winds. When conditions are just (99) , warm, moist air flows in (100) the bottom of such a disturbance, moves upward through it and comes out at the top. In the (101) , the moisture in this warm air produces rain, and with it the heat is converted to energy in the form of p winds. As the heat increases, the (102) hurricane begins to swirl in a counter-clockwise motion.
The average life of a hurricane is only about nine days, but it contains almost (103) power than we can imagine. The energy in the heat released by a hurricane’s rainfall in a(n) (104) day would (105) the entire electrical needs of the United States for more than six months. Water, not wind, is the main (106) of death and destruction in a hurricane. A(n) (107) hurricane brings 6-to 12-inch downpours (108) in sudden floods. (109) is the powerful movement of the sea-the mountains of water moving toward the low-pressure hurricane center. The water level (110) as much as 15 feet above normal as it moves toward shore.

A．cooled

B．boiled

C．steamed

D．warmed
查看答案