问题
单项选择题
胃溃疡钡剂造影检查（）
A．溃疡呈椭圆形龛影，边缘光滑
B．胃粘膜呈"鹅卵石样"改变
C．胃内可见形状规则，边缘整齐的半圆形充盈缺损阴影
D．胃内可见边缘整齐的圆形充盈缺损，中心可出现"脐样"溃疡龛影
E．龛影不规则，有半月征
答案
参考答案：A
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胃溃疡钡剂造影检查（）
A．溃疡呈椭圆形龛影，边缘光滑
B．胃粘膜呈"鹅卵石样"改变
C．胃内可见形状规则，边缘整齐的半圆形充盈缺损阴影
D．胃内可见边缘整齐的圆形充盈缺损，中心可出现"脐样"溃疡龛影
E．龛影不规则，有半月征
参考答案：A
| 选择适当的句子补全对话。 | |
| A: Mom! 1______ I've pressed the START button, and the power is on, but it doesn't work. B: Let me have a check.2______ A: Twice. 3______ B: I'm afraid so. Look! This is the START / HOLD button. It means "to stop for a while". 4______ But if you press it twice, it'll hold. A: That's why it isn't working now. 5______ B: Just press the same button again. And the machine will start working. A: OK. I'll take your advice.
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