Refer to the exhibit.HostA cannot ping HostB.Assuming routing is properly configured,what could be the cause of this problem?（）
第1题：
It is clear from the passage that Chevies refer to ______.
A. the murdered couple
B. elderly owners of cars
C. computers
D. Chevrolets
本题为细节题。根据文章第1段最后一句He said it was a 1950 or 1951 Chevro
let．和第2段第1句中的Ordinarily，searching through the files for owners of elderly Chevies would have been an impossibly difficult task because there were two and a half million such cars．我们不难看出Chevrolets与Chevies所指的是同一个东西，故应选D。第2题：
The confusion over vocabulary on how to refer to the DNA donor has been cleared.()
第3题：
What does the underlined word “anties” refer to?”
A. Smut words
B. Unusual actions.
C. Surprising Looks
D. Anxious feelings.
第4题：
What did the British Disease refer to?
第5题：
According to law, taxable services refer to transportation,()finance, insurance and the like.
A、 operation
B、 construction
C、 introduction
第6题：
What does“the days”in Paragraph 3 refer to?
A.I maginary life
B.Simple life in the past
C.Times of inventions
D.Time for constant activity
第7题：
Register is a term widely used in sociolinguistics to refer to varieties according to use.()
第8题：
What kind of people does "secret Santas" in the passage refer to?
(No more than 12 words) (3 marks)
It refers to people who give away anonymous gifts on Christmas
第9题：
Does self refer to the speaker?()
第10题：
What does the term computer language refer to?（）