In recent years.many mainland residents have rushed to Hong Kong to buy baby milk powder due to their about its quality．( )A．anxietyB．curiosityC．generosityD．attention 题目和参考答案——青夏教育精英家教网—

5．There are an extremely large number of antsworldwide．Each individual （个体的） ant hardly weigh anything，but put together they weigh roughly the same as all of mankind．They also live nearly everywhere，except on frozen mountain tops and around the poles．Foranimals their size，ants have been astonishingly successful，largely due to their wonderfulsocial behavior．
In colonies （群体） that range in size from a few hundred to tens of millions，they organize their lives with a clear division of labor．Even more amazing is how they achievethis level of organization．Where we use sound and sight to communicate，ants dependprimarily on pheromone （外激素），chemicals sent out by individuals and smelled or tastedby fellow members of their colony．When an ant finds food，it produces a pheromone that will lead others straight to where the food is．When an individual ant comes under attack or is dying，it sends out an alarm pheromone to warn the colony to prepare for a conflict as a defense unit．
In fact，when it comes to the art of war，ants have no equal．They are completely fearless and will readily take on a creature much larger than themselves，attacking in large groups and overcoming their target．Such is their devotion to the common good of the colony that not only soldier ants but also worker ants will sacrifice their lives to help defeat an enemy．
Behaving in this selfless and devoted manner，these little creatures have survived on Earth，for more than 140million years，far longer than dinosaurs．Because they think as one，they have a collective （集体的） intelligence greater than you would expect from itsindividual parts．

68．We can learn from the passage that ants areB．
A．not willing to share food
B．not found around the poles
C．more successful than all other animals
D．too many to achieve any level of organization
69．Ants can use pheromones forB．
A．escape
B．communication
C．warning enemies
D．arranging labor
70．What does the underlined expression"take on"in Paragraph 3mean？D
A．Accept．
B．Employ．
C．Play with．
D．Fight against．
71．Which of the following contributes most to the survival of ants？A
A．Their behavior．
B．Their size．
C．Their number．
D．Their weight．

4．Bicycle Safety
Operation Always ride your bike in a safe，controlled manner on campus（校园）．Obey rules and regulations．Watch out for walkers and other bicyclists，and always use your lights in dark conditions．
Theft Prevention Always securely lock your bicycle to a bicycle rack---even if you are only away for a minute．Register your bike with the University Department of Public Safety．It's fast，easy，and free．Registration permanently records your serial number，which is useful in the possible recovery of the bike stolen．
Equipment

Brakes Make sure that they are in good working order and adjusted properly．

Helmet A necessity，make sure your helmet meets current safety standards and fit properly．

Lights  Always have a front headlight---visible at least 500feet in front of the bike．A taillight is a
good idea．
Rules of the Road
Riding on Campus  As a bicycle rider，you have a responsibility to ride only on streets and posted bicycle paths．Riding on sidewalks or other walkways can lead to a fine．The speed limit for bicycles on campus is 15mph，unless otherwise posted．Always give the right of ways to walkers．If you are involved in an accident，you are required to offer appropriate aid，call the Department of Public Safety and remain at the scene until the officer lets you go．
Bicycle Parking  Only park in areas reserved for bikes．Trees，handrails，hallways，and sign posts are not for bicycle parking，and parking in such posts can result in a fine．
If Things Go Wrong
If you break the rules，you will be fined．Besides violating rules while riding bicycles on campus，you could be fined for：
No bicycle registration-------------25dollars
Bicycleparkivngbanned---------------30dollars
Blocking path with bicycle----------40dollars
Violationofbicycleequipmentrequirement----------35dollars

36．Registration of your bicycle may help youA．
A．find your stolen bicycle
B．get your serial number
C．receive free repair services
D．settle conflicts with walkers
37．According to the passage，what bike equipment is a free choice for bicycle riders？D．
A．Brakes．
B．A helmet．
C．A headlight．
D．A taillight．
38．When you ride a bicycle on the campus，C．
A．ride on posted bicycle paths and sidewalks
B．cycle at a speed of over 15mph
C．put the walkers'right of way first
D．call the police before leaving in a case of accident
39．If you lock your bicycle to a tree on the campus，you could be finedB．
A.25
B.30
C.35
D.40
40．What is the passage mainly about？A
A．A guide for safe bicycling on campus．
B．Directions for bicycle tour on campus．
C．Regulations of bicycle race on campus．
D．Rules for riding motor vehicles on campus．

11．This kind of cell phone is very common and I also have ______．（　　）

16．-How come the lake smells so terrible？
-Because large quantities of water ．（　　）

	A．	have polluted		B．	are going to pollute
	C．	had been polluted		D．	have been polluted

17．-May I carry the heavy box for you？
-Yes，please．________．（　　）

	A．	But thank you all the same		B．	I'd be very grateful
	C．	I can manage it myself		D．	At your service

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