中国大学MOOC: I’m planning to __________ to the US next year.

3. I’m planning to __________(trip/travel) to the US next year.

What bills are invalid？以下那些票据是有效的？（） A: Pay to M Co. or order the sum of one thousand US dollars.” B: Pay to M Co. providing the goods they supply are complied with contract the sum of one thousand US dollars.” C: “Pay to M Co. out of the proceeds in our No. 1 account the sum of one thousand US dollars.” D: “Pay to M Co or order the sum of one thousand US dollars and charge/debit same to applicant’s account maintained with you.” E: “Pay to the order of ABC Co. the sum of one thousand US dollars plus interest

人机界面用符号（）表示。 A: M B: HMI C: US D: SS

What bills are invalid？以下那些票据是有效的？（） A: APay to M Co. or order the sum of one thousand US dollars.” B: BPay to M Co. providing the goods they supply are complied with contract the sum of one thousand US dollars.” C: C“Pay to M Co. out of the proceeds in our No. 1 account the sum of one thousand US dollars.” D: D“Pay to M Co or order the sum of one thousand US dollars and charge/debit same to applicant’s account maintained with you.” E: E“Pay to the order of ABC Co. the sum of one thousand US dollars plus interest

I’m planning to __________ to the US next year. A: trip B: travel C: journey D: trek

— Come and join us, Ben! — I’m afraid I can’t. I’m too busy now. If I _______ time, I would certainly go.

套管声波时差的数值应为187±（）us/m。 A: 5 B: 15 C: 25

I错M厂商扫描**在装配时应插在US错-错口。

—Tell us something about Canada, OK?—I’m sorry. _______ Jack ______ I have ever been there.