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【多选题】
生态系统产品是指自然生态系统所产生的,能为人类带来直接利益的因子,它包括()等。A.
食品
B.
医用药品
C.
加工原料
D.
动力工具
手机使用
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反馈参考答案：
举一反三
【单选题】The phrase 'without coming up for air' in the second paragraph probably means ______.
A.
not going upstairs.
B.
not taking a rest.
C.
not going outside.
D.
not standing up.
【单选题】20 / 5t 桥式起重机连接线必须采用铜芯多股软线,采用多股单芯线时,截面积不小于 ( ) 。
A.
1mm 2
B.
1.5mm
C.
2.5 mm
D.
6 mm 2
【判断题】Marketing is coming up with promotional means to attract as many buyers as possible.
A.
正确
B.
错误
【单选题】—Yang yan, are you coming with us? —I’d love to, but something unexpected ______.
A.
was coming up
B.
had come up
C.
would come up
D.
has come up
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