Exactly意为“确实是这样”，表示同意对方的观点。

----- Sorry, I must be leaving now, because there's a meeting

----- _______.
A. Oh, no, you can't.　　　　　 B. Yes, you can leave if you like.
C. Do you really have to go?　　 D. Oh, no. I don't understand.

 The whole book ________ 12 units, _________ two mainly revisions.

A. contains; containing    B. includes; contain C. contains; including  D. includes; including

B
Most American kids love Halloween treats, but a bucket of Halloween candy can be a dentist’s nightmare. Some parents try to get rid of half of the candy after their children go to bed, but dentists say parents also need to separate the good kinds of treats from the bad.
It is not exactly what a child eats that truly matters, but how much time it stays in his mouth. According to pediatric dentist Dr. Kaneta Lott, the most damaging stuff is something that is sticky or very hard and thus stays in the mouth for a long time. This is because we all have bacteria in our mouths. When we eat, the bacteria take our food as their food and produce an acid that destroys the surface of the teeth, causing cavities to form. The longer the food stays in the mouth, the more likely cavities will develop. Therefore, potato chips are worse than candy because they get stuck between teeth. For the same reason, raisins and crackers are not the best choice. Hard candies take a long time to consume and are also a bad choice for Halloween treats
If children really love candy, dentists recommend that they eat chocolate instead. Unlike hard candies, chocolate dissolves quickly in the mouth. Besides, chocolate contains tannins, which help to kill some of the bacteria in the mouth. But no matter what a child eats, brushing after each meal is still the best way to fight cavities.
55．What is the main purpose of this passage?
A. To discuss how cavities can be treated.
B. To point out the problems with Halloween celebrations.
C. To tell parents what sweets are less damaging to their children’s teeth.
D. To teach parents the meaning of Halloween candies for their children.
56．Why are hard candies especially bad for teeth?
A. They may break the child’s teeth.
B. They contain too much sugar.
C. They help bacteria to produce tannins.
D. They stay in the mouth for a long time.
57．According to the passage, which of the following is a better choice for Halloween treats?
A. Chocolate.                     B. Crackers.                        C. raisins.                            D. Potato chips.
58．According to the passage, which of the following is true of tannins?
A. They are produced when the bacteria digest the food.
B. They help to get rid of some bacteria in the mouth.
C. They help chocolate to dissolve more quickly.
D. They destroy the surface of the teeth.

Guide to Stockholm University Library

Our library offers different types of studying places and provides a good studying environment.

Zones

The library is divided into different zones. The upper floor is a quiet zone with over a thousand places for silent reading, and places where you can sit and work with your own computer. The reading places consist mostly of tables and chairs. The ground floor is the zone where you can talk. Here you can find sofas and armchairs for group work.

Computers

You can use your own computer to connect to the wi-fi specially prepared for notebook computers; you can also use library computers, which contain the most commonly used applications, such as Microsoft Office. They are situated in the area known as the Experimental Field on the ground floor.

Group-study Places

If you want to discuss freely without disturbing others, you can book a study room or sit at a table on the ground floor. Some study rooms are for 2-3 people and others can hold up to 6-8 people. All rooms are marked on the library maps.

There are 40 group-study rooms that must be booked via the website. To book, you need an active University account and a valid University card. You can use a room three hours per day, nine hours at most per week.

Storage of study material

The library has lockers for students to store course literature. When you have obtained at least 40 credits (学分), you may rent a locker and pay 400 SEK for a year’s rental period.

Rules to be followed

Mobile phone conversations are not permitted anywhere in the library. Keep your phone on silent as if you were in a lecture and exit the library if you need to receive calls.

Please note that food and fruit are forbidden in the library, but you are allowed to have drinks and sweets with you.

1.The library’s upper floor is mainly for students to ______.

A．read in a quiet place

B．have group discussions

C．take comfortable seats

D．get their computers fixed

2. Library computers on the ground floor ______.

A．help students with their field experiments

B．contain software essential for schoolwork

C．are for those who want to access the wi-fi

D．are mostly used for filling out application forms

3.What condition should be met to book a group-study room?

A．A group must consist of 8 people.

B．Three-hour use per day is the minimum.

C．One should first register at the university.

D．Applications must mark the room on the map.

4.A student can rent a locker in the library if he ______.

A．can afford the rental fee

B．attends certain courses

C．has nowhere to put his books.

D．has earned the required credits

5.What should NOT be brought into the library?

A．Mobile phones

B．Orange juice

C．Candy

D．Sandwiches

As a kid, I can remember going to the supermarket and grabbing eggs off the shelf. I would run them home to my mother because they were usually going into a delicious cake. Times  have  changed.  Cage­free?  Organic?  Brown? White? Omega­3s? Help! Here are some tips to help you figure out which eggs you should choose：

●Brown or white? In fact，color is simply a sign of the breed of hen. Find the freshest egg with the most flavor and let color be a secondary concern.

●Extra Omega­3s? Omega­3 eggs come from a hen whose diet has added flaxseed(亚麻籽) ，which produces an egg containing an average of 225 mg of Omega­3 fatty acids and Vitamin E. The countless health benefits for humans make these eggs an attractive purchase. My opinion? Eat a piece of fresh fish and get a pure dose of Omega­3s. Let eggs be eggs.

●Does your egg need exercise? Free­range eggs are from hens raised without the confines of a cage, though they may or may not have spent much time outdoors. Organic eggs are from hens whose feed must meet organic standards. These hens must be raised humanely, and they must be given time to stay outdoors. Hey，happier hens do lay tastier eggs.

●Does local make a difference? Nothing is better than local eggs. They may have a feather or two stuck to them or be a little imperfect shape and they may or may not be certified (证明) organic; however, they have one quality I prize：I know exactly where my food came from and how it came to be! In some cases I can even ask the farmer when the eggs were laid and what the hens were fed.

60．What does the author think of Omega­3 eggs?

A. They are a good choice for people to purchase.

B. They contain fewer Omega­3s than fresh fish.

C. They have the highest content of pure Omega­3s.

D. They are not the best source of Omega­3s.

61．The underlined part “Free­range” probably means“________”．

A. wild             B. organic

C. special           D. Omega­3­free

62．According to the passage, which of the following has nothing to do with an egg's quality?

A. The egg's color.  　　　 B. The hen's exercise.

C. The hen's living conditions.  　      D. The hen's food.

63．This passage is most probably taken from a book named________.

A. Shopping Skills        B. Eggs and Cooking

C. Raising Hens    D. Healthy Diet