[单选题]古人在分析姓氏起源时说：“氏于国，则齐鲁秦吴……氏于字，则孟孙叔孙；氏于居，则东门北郭。”由此推论，司马、司徒等姓氏应源自

正确答案 ：A

官名

解析：【解析】“司马、司徒”是中国古代较早在中央机构就设有的重要官职，根据材料的推论可知司马、司徒等姓氏应源自官名.

[多选题]若甲地位于东八区的中央经线上，乙地位于东西半球分界线上，当甲地日出时，可能乙地的地方时是

正确答案 ：BD

8时40分

20时40分

解析：BD

[单选题]How did the calf feel about the mother elephant’s roaring?

正确答案 ：A

It was a great comfort.

[单选题]

正确答案 ：A

check

[单选题]DBrian arrived at the San Francisco airport two hours before the flight to Paris. He was wearing three shirts, a jacket, two pairs of socks, a pair of shorts, and two pairs of jeans. He was carrying one small backpack, which was very full, but he didn’t have any other luggage. Brian needed to meet a man named Tony before he checked in for his flight. He found Tony near the Air France counter. Tony gave him a round-trip ticket and a small package.

正确答案 ：K

Because he did not have any luggage with him

[单选题]下列哪些子实体能参与形成裸子器( )。

正确答案 ：C

子囊果

[单选题]What does Karen Pickering put on top of her diary?

正确答案 ：A

Her training schedule

[单选题]

正确答案 ：B

upsetting

[单选题]When changing lanes, a driver should use his turning signal to let other drivers know_____ .

正确答案 ：B

which lane he is entering

解析：

which引导的句子做know的宾语，句子用陈述语序。

[单选题]—why, Jack, you look so tired!---Well, I _____the house and I must finish the work tomorrow.

正确答案 ：D

have been painting

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