题目
下列关于蛋白质在人体的生命活动中承担主要作用的是（ ） ①氧气的运输 ②维持人体内细胞的酸碱平衡 ③促进人体生长 ④心脏的跳动 ⑤细胞的能量供应⑥精卵细胞的相互识别A.①②④⑥ B.①②③⑤ C.①③④⑥ D.①④⑤⑥ 答案：【答案】C【解析】蛋白质的功能是生命活动的主要承担者：①构成细胞和生物体的重要物质，即结构蛋白，如羽毛、头发、蛛丝、肌动蛋白；②催化作用：如绝大多数酶；③传递信息，即调节作用：如胰岛素、生长激素；④免疫作用：如免疫球蛋白（抗体）；⑤运输作用：如红细胞中的血红蛋白。①氧1、I had the privilege to visit the Bridge of
Forgiveness in Palawan during the time when I was on the summer’s team．
After the long and exciting week，we had a chance to 36 the
place where we were assigned(指定)．We 37 the narrow hanging bridge made of two bamboos and
a long rope which you can hold 38 for your life as you
cross it．1 was SO afraid of 39 ， especially here, and I think most of US were not 40
to crossing SO high a bridge． 41 ，our team leader told US that we must cross this bridge in
order to see the splendid falls that lie out on the other 42
“As you cross this bridge，think about 43 difficult，but
it is possible．”
Many times in our lives we
face 44 that we don’t expect―broken relationships，betrayal(背叛)of a friend，etc．，and all we do is 45 . But
I noticed that life must go on，and all the burdens must
be 46 through forgiveness―forgiveness of
yourself and others．
I didn’t understand my cousin 47 she
told me I should 48 all those unfriendly guys with 49 ．But as I grow older，I realize that lying in
the past 50 and guilt will not serve me well．
Once I forgave serious 51
，I noticed that I
couldn't forget them but every time I remembered them，I
52．There are no more pains brought just by the
thought of them．
After all，life is good． 53 all the hardships, pains and
difficulties, life teaches me to be 54 in facing any
adversity(逆境)while at the same time it makes me 55
to those who suffer．If somebody does something
terrible to me，I have to think back the bridge of
forgiveness ―difficult but possible．
36．A．admire
B．recognize
C．explore
D．expose
37．A．came upon
B．set aside
C．built up
D．broke down
38．A．conveniently
B．delightedly
C．tightly
D．relaxingly
39．A．distance
B．heights
C．dangers
D．1engths
40．A．devoted
B．1imited
C．opposed.
D．accustomed
41．A．However
B．Therefore
C．Otherwise
D．Anyway
42．A．side
B．hand
C．way
D．direction
43．A．happiness
B．sorrow
C．forgiveness
D．entertainment
44．A．strangers
B．environments
C．ceremonies
D．situations
45．A．hope
B．fight
C．forget
D．sigh
46．A．stopped
B．unloaded
C．added
D．charged
47．A．when
B．until
C．unless
D．before
48．A．ignore
B．tease
C．treat
D．value
49．A．patience
B．kindness
C．courage
D．violence
50．A．matters
B．hurts
C．counts
D．changes
51．A．disadvantages
B．behavior
C．friends
D．offences
52．A．ached
B．suffered
C．smiled
D．regretted
53．A．Apart from
B．Rather than
C．Instead of
D．Regardless of
54．A．strong
B．aggressive
C．inspired
D．aware
55．A．considerate
B．merciful
C．grateful
D．since
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