牡蛎散的组成是A．牡蛎，麻黄根，白术，炙甘草 B．牡蛎，麻黄根，白术，浮小麦 C．牡

用分子的相关知识解释下列现象，正确的是 [ ]

A．缉毒犬能根据气味发现毒品，是由于分子不断运动

B．石灰石能被研磨成粉末，说明分子很小

C．变瘪的乒乓球放入热水中能鼓起来，是由于分子受热变大

D．降温能使水结成冰，是因为在低温下水分子静止不动

He was struggling to tie his shoes. I was struggling with whether I should help him.
I did, and he was grateful.
"Thank you," he said.
"I’m glad I could help. I just thought it would be easier for me to reach," I said.
He was a disabled man, and forced to look down most of the time. His arms and legs were twisted terribly, and he couldn’t do what the rest of us would consider easy tasks. He always managed to Look up to see how you reacted to his words, however. He had a big smile, making me feel comfort- able.
I was still on my knees by his wheelchair.
"Nice shoes," he said.
"Thanks. No one ever complimented me on them before," I said.
"No one has the same view of the world as I do," he replied.
"Tell me about the world as you see it," I said smiling.
"Most people can see if someone is comfortable with them or not in their eyes. I see it in their feet," he said. "If people keep moving their feet, I just let them go, because I know they’re impatient with me. I don’t want to make people uncomfortable."
"What about me" I asked.
"I could see your compassion. And then you came down to my level. I was the one who was nervous," he said. "I don’t normally have someone look me in the eye. "
"They don’t know what they’re missing," I told him.
"My old face is nothing to brag about. " he said.
"But that smile is so big. "
Yes, and it’s not only a big smile but an attitude.

The writer felt comfortable because ______.

A．he had a nice talk to the man

B．the man looked him in the eye

C．he didn’t move his feet before the man

D．the man had a big smile on the face

(六)甲、乙两厂签订的合同约定：甲厂于合同成立后10日内向乙厂供应原料，乙厂应于一个月自向甲厂提供制成品。合同成立次日，乙厂发生水灾，损失严重。甲厂判断乙厂已无履行债务的能力，拒绝向乙厂运送原料，而与丙厂签订了类似的合同，把原料运到丙厂。乙厂多次与甲厂交涉，并愿意提供相应的担保，但甲厂始终不予理睬。一个月后，乙厂由于原料短缺，只好停工、停产，损失严重，遂向人民法院提起诉讼，请求甲厂承担违约责任，并继续履行合同。 根据上述事实，回答下列问题：

(2002，82)在乙厂发生了可能使其丧失履行债务能力的事由后，甲厂可以( )。

A．解除合同

B．终止履行合同

C．暂时停止履行合同，并通知乙厂要求其提供相应的担保

D．要求乙厂提前履行合同

下列有关控制渠道流量、流速和水位说法中不正确的是（）。

A、可以报请上级主管部门后在渠道上及其内外坡垦殖、铲草、放牧及滥伐护渠林

B、禁止在保护范围内任意挖沙、埋坟、打井、修塘、建筑

C、渠道遭受局部冲刷破坏之处，要及时修复，防止破坏加剧

D、严格控制渠道流量、流速和水位，放水和停水时避免猛增猛减，确保渠道输水安全

总调、中调调管设备的检修工作相互影响，或总调、省（区）通信机构调管通信设备的检修工作影响对方业务电路时，计划检修提前几个工作日、非计划检修提前几个工作日相互通报？