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问题 选择题

—You speak very good French !

—Thanks . I __________ French in Sichuan University for four years.

A．studied

B．study

C．was studying

D．had studied

答案

 A

由你（现在）法语说得很好可知本题强调过去发生的动作（我过去在四川大学学过四年法语），故用一般过去时。

单项选择题

倾倒综合征常发生于

A．迷走神经干切断术后
B．毕Ⅰ式胃切除术后
C．毕Ⅱ式胃切除术后
D．幽门成形术
E．高选择性胃迷走神经切断术后
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单项选择题

Ink-jet printer belongs to nonimpact printers in which the characters are formed by projecting particles or droplets of ink on to paper. (71) printer is also a n0nimpact printer in which the characters are produced by applying hot elements to heat-sensitive paper directly or by melting ink from a (72) on to plain paper. Electrostatic printer creates an electrostatic latent image, which is then made visible by a toner and transferred and fixed on paper. An electrostatic printer may be used in some instances as a (73) . Laser printer creates, by means of a laser beam directed on a (74) surface, a latent image which is then made visible by a toner and transferred and fixed on paper. Magnetographic printer creates, by means of magnetic heads operating on a metallic drum, a latent image which is then made visible by a toner and transferred and fixed on paper. Computer-output-microfilm (COM) printer produces on a photographic film a (75) of each page.

（71）处填（）。

A．Hot

B．Warm

C．Heat

D．Thermal
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