糖尿病人术前尿糖应控制在（）。 A.尿糖（+） B.尿糖（-） C.尿糖（+～++）

自然界和生活中的许多现象都与物理知识有关，请你运用所学过的物理知识简要解释下列问题：

（1）正在拉二胡的一位同学不断用手指去控制琴弦，这样做的目的是：______．

（2）电视机的荧光屏上经常粘有灰尘，这是因为电视机工作时，屏幕上：______．

（3）古代记载有“山顶有泉，煮米不成饭”，其原因是______．

某地区有些得到国家特殊政策的国有企业仍然未扭亏为盈，这让区委书记格外着急。 以下哪项论断最符合以上论述的基本思想

A．该地区得到国家特殊政策的国有企业都没有盈利，区委书记为此着急。

B．该地区得到国家特殊政策的国有企业没有亏损，不需要扭亏，区委书记不必着急。

C．该地区没有得到国家特殊政策的国有企业都有盈利，区委书记对他们放心。

D．该地区所有不盈利的企业都让区委书记着急，尤其是其中的试点单位。

Recently, a student used his Personal Digital Assistant (PDA) to film a female teacher scolding and tearing the work of a classmate. The public discussion that the incident caused started on the Internet. However, when it came to the media’s attention, it quickly became a major topic in the education circles. The reactions so far suggest that the focus of the debate has been on one question: whom to blame?

Teachers who are anxious to defend their professional dignity have tried to put the blame on the students. They mentioned their right to privacy 隐私）and for this reason they requested the Ministry of Education (MOE) to prohibit PDAs in schools. On the other hand, some parents and students have taken a different position. They feel that the teacher is also at fault. Caught up in the war of words between both sides, people are no longer interested in the “truth” of the matter which seems now unimportant. It was left to newspapers to discover the central point of the controversial issue, by stressing the problems that are not always easily noticed in our educational system.

For those responsible for educating the young, this PDA incident conveys the message that “Times have changed”，a reality that must have been felt even more strongly by the female teacher when reflecting on this unpleasant experience. Different times call for different professional approaches in education. The ability to understand the students they are teaching has always been the quality of successful teachers. Despite some factors, the incident shows that the teacher lacks good qualities on her part. Besides, the rules under current system to deal with recalcitrant students need to be improved. Also, it is an example which shows the issue we are familiar with: what to do with new technology? With PDA, the new technology, the interaction (交流）between the teacher and students in classroom has been changed.

小题1:The author’s purpose in writing this passage is to______.

A．improve the teachers’ way of teaching

B．stress the using of PDA in the classroom

C．change the students’ behavior in the classroom

D．discuss the potential problems of educational system小题2:The underlined word “recalcitrant” in paragraph 3 probably means______?

A．difficult to control

B．interested in nothing

C．unwilling to learn

D．ready to obey rules小题3:The writer’s attitude toward the PDA incident is______.

A．optimistic

B．critical

C．uncertain

D．approval小题4:What might be the best title for the passage?

A．Whom to blame?

B．The PDA incident

C．Times have changed

D．What to do with new technology?

根据《建筑安装费用项目组成》(建标[2003]206号)，施工企业为保障安全施工搭讪的防护网的费用应计入建筑安装工程( 　)。

A．直接工程费

B．措施费

C．经费

D．企业管理费

QRK柜应急通风按钮35S05为（）式按钮。