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下列程序段的输出结果是 CLEAR STORE 10 TO A STORE 20 TO B SET UDFPARMS TO REFERENCE DO SWAP WITH A,(
A. 10 20
B. 20 20
C. 20 10
D. 10 10
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