假设用户名和口令存储在自由表“口令表”中,当用户输入用户名和口令并单击录”按钮时,若用户名输入错误,则提示“用户名错误”;若用户名输入正确,而口令输入错误,则提示“口令错误”。若命令按钮“登录”的click事件中的代码如 USE 口令表 GO TOP flag=0 DO WHILE.not.EOF0 IF Ailtrim(用户名)=Alltrim(This form.Text1.Value) IF Alltrim(口令)=Alltrim(Thisform.Text2.Value) WA1T"欢迎使用"WIN DOW TIMEOUT2 ELSE WAIT"口令错误" WINDOW TIMEOUT2 ENDIF flag=1 EXIT ENDIF SKIP ENDDO IF______ WAIT"用户名错误"WINDOW TIMEOUT2 ENDIF 则在横线处应填写的代码是
A. flag=-1
B. flag=0
C. flag=1
D. flag=2
What can we infer from the last paragraph?
A. Teachers welcome the imposition of technology uses.
B. Higher administration's support is the most critical to the use of instrumental technologies.
C. The teacher using instrumental technologies may have longer tenure.
D. The instrumental technologies are easy to use.
For what purpose does the writer cite the subsequent research made at Western Michigan University?
A. To provide evidence for how new knowledge is produced.
B. To show the university's progress in using technology.
C. To elaborate on the factors influencing the use of new instructional technologies.
D. To tell that new knowledge can be enhanced by technology
Section B
Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.
The Obesity is a national health crisis, one that—quite literally—weighs on us all. It costs lives. It costs dollars. And in the context of our current health-reform. debate in Washington, it's time we took action, as a nation and as individuals, to address this cost.
While infectious disease was a disaster recently as our grandparents' generation, chronic disease is killing us and harming our well-being—and obesity is the root cause. The growth in obesity is strongly linked to heart disease, hypertension, and the explosion of diabetes that our country is currently experiencing. These and other chronic diseases account for 7 out of every 10 deaths each year and are the leading cause of death and disability in the U.S. They are also responsible for more than 75 percent of the nation's health-care spending.
Year after year, more Americans have become obese or overweight, now representing one third of the population. One in five 4-year-olds are obese, contributing to the fact that for the first time ever, children may have a shorter lifespan than their parents. But the obesity crisis isn't simply a health crisis; it is also an economic crisis—and the mount that it costs us in terms of lost lives, lost productivity, and lost dollars is staggering and deserves attention from our national leaders, and from us.
Obesity accounts for nearly 10 percent of what the U.S. spends annually on health care and is linked to about one third of the increase in domestic health spending since the mid-1980s. It is a huge cost driver in Medicare and Medicaid—so even if you or your family members are not obese, you, like the rest of us, are paying for this crisis. Were obesity at 1987 levels, Medicare spending would be $ 40 billion per year lower than it was in 2006. A University of Florida study found that health-care spending for 65-year-old men of normal weight was 6 to 13 percent less over the remainder of their lifetime than those who were overweight or obese.
At a time when Americans are on tight budgets and Congress is struggling to "find" savings to pay for health-care reform, it's easy to see why we need to make changes. Policy changes in Washington are a critical part of the solution. We need common-sense reforms in our health system (such as lowering co-pays on preventive care and offering programs to help overweight Americans), in our schools (such as reinstating physical education and requiring school lunches to meet nutritional standards), in our workplaces (such as offering tax credits to employers that offer wellness benefits and encourage health inside and outside of the workplace), and in our communities (such as ensuring that all Americans have access to a place to be physically active and purchase healthy foods).
According to the passage, the Americans nowadays fire faced with ______.
A. the same ailment afflicted their grandparents' generation
B. higher death rate caused by infectious diseases
C. the problems caused by obesity
D. lowering Midicare budgets compared to their grandparents' generation