题目

如图表示叶绿体中色素吸收光能的情况．据图判断，以下说法不正确的是（    ） A.由图可知，类胡萝卜素主要吸收400nm～500nm波长的光B.用450nm波长的光比600nm波长的光更有利于提高光合作用强度C.由550nm波长的光转为670nm波长的光后，叶绿体中C3的量增加D.土壤中缺乏镁时，植物对420nm～470nm波长的光的利用量显著减少 请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。    When we visit another country, differences in music and dance are   1some of the first things that we notice. Every culture has   2its own types of music and dance, which are very different from those of other societies.    Each type of music usually has a distinctive rhythm and a special sound,   3on the kinds of instruments that are used to produce it. The most common type of instruments are 4instruments, such as guitars and violins; wind instruments, including horns and flutes. Many different kinds of musical sounds   5be created by using different combinations of instruments.    The human voice is a very special kind of instrument,   6it can produce a great number of different sounds with different   7, ranging from loud to soft. Singing is very popular in most cultures because it allows us to   8words and ideas with music.    Societies coordinate body movements with musical rhythms to create   9. Sometimes people dance for fun and individual expression. Dances can also be used to   10ideas to an audience. Hawaiian dancers,   11, use arm and hand movements to express the meaning of a song. In the same way, many societies use dances in religious ceremonies   12to tell about important events.    Music and dance are passed from one   13to another and thus become a permanent part of the society and   14culture. Of course, as cultures come   15contact with each other, the music and dance of one society may be accepted by other societies, or the different styles may be combined to   16a new kind of music or dance. Some Latin American music, for example, has taken   17from Indian cultures and mixed them with those from European and African cultures.   18, popular music from England and the US can be heard in countries   19the world,   20it has had an influence on musical tastes, especially among young people. 1.A. unlikely           B. probably         C. likely               D. surely 2.A. installed      B. developed            C. meant                D. established 3.A. depending      B. relying              C. playing          D. resting 4.A. thread         B. cord             C. string               D. band 5.A. can            B. might            C. must             D. should 6.A. when           B. since                C. after                D. although 7.A. heights            B. sizes                C. volumes          D. tones 8.A. express            B. explain          C. provide          D. compose 9.A. sounds         B. songs                C. dances               D. moves 10.A. give          B. perform          C. translate            D. communicate 11.A. for example       B. such as          C. that is              D. on the contrary 12.A. just          B. as               C. or               D. only 13.A. country           B. people               C. generation           D. time 14.A. their         B. the              C. form             D. its 15.A. to                B. into             C. for              D. with 16.A. join          B. show             C. become           D. form 17.A. advantages        B. styles               C. features         D. origins 18.A. However       B. On the contrary      C. Besides          D. Similarly 19.A. over          B. across               C. through          D. along 20.A. where         B. when             C. which                D. what