完形填空 （共20小题，每小题1分，满分20分）Are you carrying too much on your back at school? Lots of kids at

完形填空 （共20小题，每小题1分，满分20分）
Are you carrying too much on your back at school? Lots of kids at the same age as you are. Not only are students in China     36     from this problem, but kids in the United States are     37     fed up with（饱受…之苦） heavy school bags.
Experts are starting to    38     that more and more young students are having back and neck problems as a result of school bags     39     too heavy for them. “It’s hard for me to get up the    40     with my bag because it’s so heavy,” said Rich Hammond,     41     11-year-old student in the US. Rick is among the students who have     42     backpacks with two straps (带子) to carry them,     43     a number of other students choose rolling backpacks. However, even with rolling backpacks,     44     up stairs and buses with them is     45     a problem for kids. Many of them have hurt their knees, backs or necks because of heavy school bags.
But how much is too     46    ? Experts say students should carry     47     more than 10 to 15 per cent of their own body weight. Scott Bautch, a Wisconsin     48     doctor, said kids under 4th grade should     49     with 10 per cent. But it’s also important that older kids don’t go     50     15 percent, because their bones are still growing. Bautch explained that there are other injuries caused by backpacks. “Kids are     51     their balance and falling down with these backpacks,” he said．
Parents and teachers are starting to tell the kids to only take     52     library books they will be reading that night. Some teachers are using worksheets (作业纸) or     53     workbooks for students to take home. One of the best answers is, as some     54     themselves suggested, to have no homework     55    !
36． A．meeting                B．facing                    C．experiencing   D．suffering
37． A．already       B．always             C．yet              D．also
38． A．explain             B．say               C．worry               D．announce
39． A．being              B．be                C．are               D．is
40．A．schools              B．stairs            C．houses             D．homes
41．A．this                 B．that             C．a                    D．an
42．A．special               B．unusual          C．ordinary            D．regular
43．A．when                B．but             C．then                  D．and
44．A. getting               B．climbing     C．going                D．turning
45．A．only                 B．still              C．even                D．just
46．A．more                B．very              C．much              D．many
47．A．no                  B．not              C．any                 D．much
48．A．children              B．student           C．bag                  D．back
49．A．carry               B．stay         C．take               D．bring
50．A．about              B．under        C．beyond               D．before
51．A．keeping             B．missing       C．losing              D．making
52．A．home              B．class         C．school              D．city
53．A．valuable             B．thin         C．important           D．interesting
54．A．reports              B．teachers      C．parents       D．kids
55．A．at all                B．after all      C．in all         D．for all36—40 DDCAB 41—45 DDBAB  46—50 CADBC  51—55 CABDA