John thinks it won’t be long _____ he is

下图是用显微镜观察植物细胞临时装片的两个视野，要把视野中的物像从甲图转变为乙图，下列操作步骤正确的排序是①转动细准焦螺旋②调节光圈③移动装片④转动转换器  

A．③→①→②→④      

B．④→③→②→①

C．③→①→④→②      

D．③→④→②→①

如图所示，光滑的斜劈放在水平面上，斜面上用固定的竖直板挡住一个光滑球，当整个装置沿水平面以速度v匀速运动时，以下说法中正确的是（　　）

A．小球的重力不做功

B．斜面对球的弹力不做功

C．挡板对球的弹力不做功

D．以上三种说法都正确

两根足够长的金属导轨竖直放置，间距为L，底端接阻值为R的电阻．将质量为m的金属棒悬挂在一个固定的轻弹簧下端，金属棒和导轨接触良好，导轨所在平面与磁感应强度为B的匀强磁场垂直，如图所示．除电阻R外其余电阻不计．现将金属棒从弹簧原长位置由静止释放，则（　　）

A．释放瞬间金属棒的加速度等于重力加速度g

B．金属棒的速度为v时，金属棒两端的电压U=BLv

C．金属棒的速度为v时，所受合外力的大小为F=

D．电阻R上产生的总热量等于金属棒重力势能的减少

In today's fast-paced (快节奏) society, few people take time to enjoy the midday meal．Most of us just rush right through it. We grab a quick salad, or buy a sandwich and eat at our computers, Sometimes, if there is a deadline around the corner, we just skip lunch．

The development of technology hasn't done our eating habits much good either．We are constantly distracted by e-mail, social media, and 24 - hour news．Even when we do sit down for lunch, we are more connected to our hand - held electronic devices．

Long working hours can cause all kinds of health problems, and many developed countries have put in place labor laws specifically regarding the lunch break．These laws give employees the right to take a break during a long work shift, but it's up to them whether they do so or not．

Frank Partnoy, a former Wall Street trader, says that employers should encourage workers to take time off for lunch．This is because long lunch breaks can benefit both individuals and society.

Writing in The Guardian, Partnoy says that one obvious reason to take a lunch break is to slow down and gain some perspective（认识）． A break from work allows us to think strategically and outside the box．It also puts our daily tasks into a broader context（背景）．

What we eat at lunch is also important．In Partnoy' s opinion, a fast food lunch is more harmful than not having lunch at all．  And it's not just about calories and unhealthy food．Recent studies show that fast food also has negative effects on how we think．

However, if we sit down at a proper restaurant and chat leisurely with colleagues, we are more likely to slow down, something that hardly can be achieved in a noisy and over — packed fast food chain．

Despite these benefits, some employees might still be unwilling to take time off for lunch．Partnoy's suggestion? Make skipping lunch difficult: Employers could ask workers to fill out a form stating their reasons for skipping the meal．

小题1:What does the underlined phrase "skip lunch" mean in the first paragraph?

A．have a quick lunch

B．don't have lunch

C．work while having lunch

D．take a lunch break小题2:Which of the following is true according to the text?

A．Modern technology results in good diet habits．

B．Electronic devices make our life comfortable．

C．Many people are too busy to have a good lunch．

D．Laws have passed to make workers have lunch．小题3:According to Frank Partnoy, long lunch breaks            .

A．are time for the workers to relax their mind

B．make the employees work longer hours

C．are for employees to have a quick lunch

D．make the workers eat a proper lunch at home小题4:In Partnoy's opinion, a fast food lunch                .

A．saves a lot of time for a rest

B．affects people's way of thinking

C．is better than having no lunch

D．makes workers sit down and think小题5:What might be the author's purpose in writing the text?

A．To warn us not to eat fast food．

B．To introduce Frank Partnoy's opinion．

C．To encourage us to work more efficiently．

D．To show the importance of a proper lunch．

注册验资账户撤销后，未将资金退回原存款人账户，转入他人账户的，给予有关责任人员（）处分。

A、警告至开除

B、警告至撤职

C、记过至开除

D、记过至撤职