问题 填空题

电阻R1=30 Ω,与电阻R2串联后总电阻为90 Ω,则电阻R2     _____ Ω。将这两个电阻并联,其并联的电阻为       ____Ω。

答案

60;20

阅读理解

BEIJING ACE TRAVEL AGENCY
Beijing-Singapore: four days in Singapore
Website: www.beijingtour.com
Telephone: 010-62617788
MIRAMER HOTEL
restaurant & cafe, swimming pool, KTV, clothing store, reading roomDay 1:
Morning: land at Singapore Changi Airport
Afternoon: take a bus tour of the island
Evening: have a party in KTV
Day 2:
Morning: visit the Handicraft Center and the National Museum
Afternoon: take the cable car (缆车) to Sentosa Island
Day 3:
Morning: take a walking tour of old Singapore, including Chinatown
Afternoon: take a boat trip around the island
Day 4:
Daytime: free for shopping
Evening: return by air
Departure (出发) date & Price:
August 16, 2011 ¥3,220    August 17, 2011 ¥3,100
August 18, 2011 ¥2,950    August 19, 2011 ¥3,150
根据材料内容,选择最佳选项。(10分)
小题1:Travelers in the tour group will travel to Singapore _____.
A.by airB.by seaC.by trainD.by bus
小题2:In the notice, we aren’t told ______.
A.the cost of the tourB.therouteof the tour
C.the address of the travel agencyD.the date of departure
小题3:On the second day, travelers in the tour group can _____. 
A.go to ChinatownB.visit Sentosa Island
C.tour around by boatD.have a party in KTV
小题4:When can travelers shop freely during the tour?
A.On the first day.B.On the second day.
C.On the third day.D.On the last day.
小题5:If you want to spend 3,000 yuan at most on the tour, you can choose _____ as your departure date.
A.August 16 B.August 17C.August 18D.August 19
判断题