下列选项中，（）不属于花卉修剪的作用。A、对植株整体的暂时削弱 B、对植株局部的促进

如图所示，是在一些公共场所安装的两种电子监控器。它们主要由两部分组成，一部分为光学系统，另一部分为光电转换系统。光学系统收集被监控区域内的景物信息；光电转换系统把光信号转换成电信号，输送到监控中心，实现间接监控的目的。其光学系统的工作原理相当于

A．平面镜成虚像    

B．凹透镜成虚像

C．凸透镜成实像    

D．凸透镜成虚像

第II卷（选做题，40分）

友情提醒：

本部分试卷分为A、B两类，同学们可以选做A、B两类中任何一类，但选择要统一，不可两类混做，多做或混做均不得分。

A类题

第四部分单词拼写（共20小题, 每小题1分，满分20分）

76. The castle was once owned by the king, but now it lies in r__________.

77. To my great d__________, my son has passed all his exams.

78. The next day, US President Franklin Roosevelt d________ war against Japan.

79. The United Kingdom c__________ of Great Britain and Northern Ireland.

80. I got i__________in the quarrel between Tom and Jack.

81. Government promises to _______（创造）more jobs for laid-off workers.

82. Humans ________(不同于) from other mammals in their ability to speak.

83. She is so ____________（特别的；挑剔的）about food that no cook can please her.

84. We should keep the __________(平衡) of nature.  

85. We all hope that there’s no war and the people all over the world can live p___________ (和平地) side by side.

86. Apparently s__________ to criticism, the bull forgot all about the matador and charged at the drunk.

87. When the bull got close to him, he c__________ stepped aside to let it pass.

88. It is not only of immense size, but is extremely a__________ as well.

89. Following in his father’s f__________ many years later, Sir Malcolm’s son, Donald, also set up a world record.

90. Children who play t__________ from school are unimaginative.

91. The next car the boy stopped did not take him into the centre of Paris as he hoped it would, but to Perpignan on the French-Spanish __________(边界).

92. Dressed in dark glasses and old clothes, they had taken special __________(预防措施) so that no one should recognize them.

93. “Oh, is it?” said the sheriff with a __________(冷笑).

94. She __________(跺，踩) out the letters “SOS” in the snow.

95. It was not long before a helicopter arrived on the scene to rescue the __________(幸存者) of the plane crash.

请画出图中潜水艇加速上浮时所受重力和浮力的示意图（小黑点O表示潜水艇的重心）

对变形尺寸较大的锅炉钢架构件要进行校正。校正的方法一般有冷压校正和热压校正。( )