1．Join San Diego Harbor Excursion（游覽）for a harbor tour or Whale Watch．Harbor tours run year round and frequently each day； you can choose from the one hour North or South Bay tour．The Whale Watch is operated seasonally and runs from December to March．It takes two hours，and will follow the California gray whale as it migrates（遷徙）from the Bering Sea to Baja．On the water，you might also experience views of dolphins，seals and much more．Bring your camera and enjoy a wonderful day on the water in San Diego!
Note：
With the Go San Diego Card you get your choice of l hour North and South harbor tour or Whale Watch．
Cost without the card（an hour）：
    Adult，30.00．Childover3，15.00．Child under 3，free．
Included Extras：
    20% savings at the Glorietta Gift Shop and 20%savings at the Bay Care with the Go San Diego Card．
North Bay：
     Weather permitting，10：00，am，12：30 pm，3.0 pm，and 5：30 pm．Daily except Monday；all the year around；
South Bay（an hour）：
    Weather permitting，9：45 am，11：15 am，1：30．pm and 4：15 pm every day．Only summer；it may be closed major US holidays．
Address：
l 050 North Harbor．Drive，San Diego，CA 92101
Contact：
   If you want more information you can call at the number l-800-442-7847 of surf the Interact www．Sdhe．com．
Driving：
    From the south，the exit is at Front Street．Turn right at Broadway．Continue on Broadway until you see the black ticket booth at Bay Caf．From the north，the exit is at Hawthorn．Street．Turn left at North Harbor Drive．Continue on North Harbor Drive until you see the black ticket booth at Bay Caf．Parking is available next door or across the street．

46．How long does the Whale Watch last？A
A．A whole winter．  
B．About 5 months．
C．About half a year．
D．About 2 months．
47．How much will a couple with a 2-year-old child pay for Whale Watch without the card？C
A．60 dollars．   
B．150 dollars．  
C．120 dollars．
D．75 dollars：
48．If you only have time after five in the afternoon you will go to theB
A．North Bay on Mondays           
B．North Bay from Tuesday to Sunday
C．South Bay from Monday to Friday 
D．South Bay on any holiday
49．If you are from the south and want to buy the ticket you willA
A．turn right at Broadway and drive to Bay Caf
B．turn left at Broadway and drive to the ticket booth
C．turn right at North Harbor Drive and go ahead
D．mm left at North Harbor Drive and go forward
50．The author writes this passage mainly to tell readersC
A．San Diego Harbor Whale Watch
B．how to enjoy the Whale Watch
C．the information about San Diego Harbor Excursion
D．how to get the harbor tour tickets．

20．Mr．White stayed with my father for two months _______ time he drank all the wine that my father had．（　�。�

A．

at which

B．

in that

C．

on which

D．

during which

19．Researchers have been able to translate brain signals into speech using sensors ____ to the surface of the brain for the first time．（　�。�

	A．	attached		B．	to be attached
	C．	attaching		D．	having been attached

18．After taking the medicine，the patient got _______ and could go out to walk．（　�。�

A．

protection

B．

relief

C．

safety

D．

defense

17．The accident happened on such an evening with strong winds _______ by heavy rain．（　�。�

A．

appeared

B．

struck

C．

accompanied

D．

mixed

16．Snorkeling trips are great fun but they ________ be very dangerous underwater．（　�。�

A．

can

B．

must

C．

shall

D．

will

15．A firm from New Zealand has revealed a set of robotic legs which they claim will soon
allow _______ wheel chair-bound people to walk again．（　�。�

A．

originally

B．

previously

C．

properly

D．

primarily

14．The woman，who is said to have moved to America，_____ in China for almost twenty years．（　�。�

A．

lived

B．

has lived

C．

was living

D．

had lived

13．---Why did you leave without a word of warning to Robert？
---But what _______ otherwise？He never likes to listen to me．（　�。�

	A．	could I do		B．	could I have done
	C．	must I have done		D．	should I do

12．Nearly 80 percent of female respondents said men ______ less than 4，000yuan a month should not start a relationship．（　　）

A．

earned

B．

earning

C．

having earned

D．

to earn