27. Bungee jumping is an adventurous sport, popular with young adults, ______courage matters more than strength.
A. whose B. that C. of which D. where
26. -Can I pay the bill by check?
-Sorry, sir. But it is the management rules of our hotel that payment be made in cash.
A. shall B. need C. will D. can
25. Mom promised to buy me a nice gift for my birthday, beyond my imagination.
A. the one B. that C. which D. something
24. in a famous university is what most students wish for.
A. To educate B. Educated C. Being educated D. Educating
23. I wonder what it feels like to be one of _____ really rich. The Browns already have two Rolls-Royces and now they are buying ______ third.
A. the ; a B. 不填;a C. the; the D. 不填;the
22. -“Neal, listen,” she said, looking straight at him. “I ask you not to get_____ in this kind of matter.”
-“It’s none of your business.”
A. caught B. attached C. involved D. connected
第一节 单项填空(共15小题;每小题1分,满分15分)
从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
21. After staying in hospital for long, the patient was advised to go to the seaside to _____ his health.
A. take on B. pick up C. carry on D. make up
54.(12分)下面的方法可用来测定田间棉花植株的光合作用强度。
①在田间选定有代表性的叶片(叶片左右对称)20片,挂小纸牌编号。②用5%的三氯乙酸点涂叶柄一圈,将叶柄的筛管细胞杀死,并采取措施尽量保持叶片的自然生长角度。③按编号顺序分别剪下叶片对称的一半,依次夹入湿润的纱布中,贮于暗处;4小时后,再按编号顺序以同样的速度剪下另外半片叶,也依次夹于湿润的纱布中。④返回实验室后将各同号叶片的两半对应叠在一起,在无粗叶脉处用刀片沿边切下一定面积的两个叶块,分别置于两个称量皿中,80-90℃下烘干5小时,然后在分析天平上称重、记录数据、进行比较。
两部分叶片干重差的总和除以叶面积及照光时数,即为光合强度:
光合强度:干重增加总数÷(切取叶面积总和×照光时数)。
(1)在该实验中,特定时间段内的光合产量=________________________________________。
(2)用三氯乙酸杀死叶柄筛管细胞的目的是________________________________________。
(3)实验步骤中,有一些措施是为了减少实验误差而设置的,请你列举两例。
①___________________________________;②____________________________________。
(4)衡量光合作用强度的指标,除了本实验所用的干物质重外,还可以用
______________________________或______________________________________。
合肥一六八中学复读年级第二次段考
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