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【单选题】
在某工地食堂用餐后半小时左右，有多名工人口唇、指甲和全身皮肤出现紫绀，并出现精神萎靡、头晕、头痛、乏力、心跳加速，有的伴有恶心、呕吐、腹胀、烦躁不安、呼吸困难。其最大可能是A.
河豚鱼中毒
B.
四季豆中毒
C.
亚硝酸盐中毒
D.
沙门菌中毒
E.
葡萄球菌肠毒素中毒
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举一反三
【单选题】— You look unhappy, my son? — I'm wondering how long it'll be ________ we come to China again. [ ]
A.
since
B.
when
C.
before
D.
after
【单选题】--Excuse me, sir. Look at the sign on the wall “NO ____”. --Oh, I’m sorry. I’ll never do it again.
A.
PARKED
B.
SMOKE
C.
SPITTING
D.
SMOKED
【单选题】－Look! The dress over there is so beautiful. I’ll take it. －You’d better ________first. I’m afraid it’s too short for you.
A.
pay for it
B.
put it on
C.
try it on
D.
wait for it
【单选题】听力原文：M: Look at the lake. I'm glad we'll be able to go skating this weekend. W: Not if it's too windy. Q: What's the weather like? (2)
A.
It's windy.
B.
It's cold.
C.
It's warm.
D.
It's rainy.
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