16.Please remember to remind them that the products inside are________ and must be handled with great care.
A.stubborn B.dynamic C. dedicated D. fragile
17.A concert will be held_________ the world-famous musician, who will personally play his favourite music at it.
A. in memory of B. in favour of C. in salute to D. in reply to
18.Evidence provided by the school has proved that John was once a good student_________ grades and attendance fell as he became addicted to playing computer games.
A.which B. of whom C. of which D.whose
19.Dozens of people were waiting with a camera for________ seemed like hours, hoping to catch a glimpse of the US First Lady, Michelle Obama.
A.it B.what C.that D.which
20.Ransomware is a type of malware that prevents users from accessing their system, either by locking the system’s screen or by locking the users’ files__________ a ransom is paid.
A. if B. though C. unless D. when
21. Consumers ,whose purchases ___ about 70% of economic activity ,face a variety choices. A. A.take up B account for C. hold up D. turn over
22. The question was frequently referred to at the conference ______ it is economic to develop solar energy when it needs such large amounts of investment.
A. why B. whether C. where D. that
23.The pupils in our school like reading after lunch, most of_______ seated on the grass unless it rains.
A.them B. whom C. which D who
24._________ the extraordinary beauty of Changling is the Ling’en Palace, known for its simple design and painted ceiling.
A. Added to B. Adding to C. Being added up to D. Having added to
