[单选题] You can turn on the toy robot by（）this button.

1、[单选题]一 Jeff, I'd appreciate it if you could help me with the opening speech I'm giving next week.
一（），but I'll have some time between five and six pm.

• A、Don't mention it
• B、Yes, it's as quiet as we expected
• C、Well, it's pretty busy this morning

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2、[单选题]This, they argue, will be essential to（）the needs of a booming population in decades to come and avoiding starvation.

• A、meet
• B、meeting
• C、met

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3、[单选题]She's not very optimistic（）the development of 3D printing.

• A、to
• B、about
• C、at

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4、[单选题]Absolutely, that movie（）and I must admit that its director is brilliant.

• A、held my breath
• B、caught my breath
• C、took my breath away

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5、[单选题]He is still a（）in handling such things.

• A、green hand
• B、visitor
• C、adult

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