A small dog should be belly-up after eating a handful M＆M’s, at least according to conventional wisdom. But watching “Moose”, a friend’s five-pound Chihuahua, race around a living room after his sweet snack makes one wonder: Is chocolate truly poisonous to dogs?
Dogs and humans have similar tastes. But unlike humans, our companions experience dangerous effects from eating chocolate — it can poison them and in some cases is fatal. Chocolate’s danger to dogs depends on its quality.
Chocolate is processed from the bitter seeds of the cocoa tree, which contain a family of compounds known as methylxanthines（一种衍生物）. This class of substances includes caffeine and the related chemical theobromine(可可碱). Chocolate contains a significant amount of theobromine and smaller amounts of caffeine. These chemicals can cause a dog’s heart to race up to twice its normal rate, and some dogs may run around as if “they drank a gallon of espresso,” according to Hackett.
Dogs are capable of handling some chocolate, but it depends on the animal’s weight and the type of chocolate it eats. Unsweetened baking chocolate contains more than six times as much theobromine as milk chocolate, although amounts vary between cocoa beans as well as different brands of chocolate. Less than four ounces of milk chocolate is potentially fatal for Moose and other small dogs.
Around every confection-centered holiday — Valentine’s Day, Easter and Christmas — at least three or four dogs are hospitalized overnight in the animal medical center at Colorado State. But in 16 years, Hackett has seen just one dog die from chocolate poisoning, and he suspects it may have had an underlying disease that made it more exposed to chocolate’s heart-racing effect.
1. The underlined expression “belly-up” probably means______.
A. dead            B. poisonous                 C. running around  D. having a headache
2. All of the following are true EXCEPT______.
A. chocolate’s danger to dogs depends on its quantity and quality
B. people buy lots of chocolate around Valentine’s Day
C. an ounce of unsweetened baking chocolate is safe for Moose
D. there must be some theobromine or caffeine in espresso
3. What can we learn about Hackett?
A. He is an animal doctor.         B. He is a pet shop owner.
C. He is the owner of Moose       D. He is a doctor in a small hospital.
4. It can be inferred from the passage that Hackett believes that__________.
A. chocolate is truly deadly to dogs 
B. it’s OK to give chocolate to a big dog
C. pets are usually ignored around confection-centered holidays
D. a healthy dog probably could survive a chocolate poisoning
5. The passage is mainly about__________.
A. the poisoning of Moose   
B. the compounds of different chocolates
C. a handful M＆M’s chocolate is poisonous
D. the relation between methylxanthines and chocolate poisoning

A small dog should be belly-up after eating a handful M＆M’s, at least according to conventional wisdom. But watching “Moose”, a friend’s five-pound Chihuahua, race around a living room after his sweet snack makes one wonder: Is chocolate truly poisonous to dogs?

Dogs and humans have similar tastes. But unlike humans, our companions experience dangerous effects from eating chocolate — it can poison them and in some cases is fatal. Chocolate’s danger to dogs depends on its quality.

Chocolate is processed from the bitter seeds of the cocoa tree, which contain a family of compounds known as methylxanthines（一种衍生物）. This class of substances includes caffeine and the related chemical theobromine(可可碱). Chocolate contains a significant amount of theobromine and smaller amounts of caffeine. These chemicals can cause a dog’s heart to race up to twice its normal rate, and some dogs may run around as if “they drank a gallon of espresso,” according to Hackett.

Dogs are capable of handling some chocolate, but it depends on the animal’s weight and the type of chocolate it eats. Unsweetened baking chocolate contains more than six times as much theobromine as milk chocolate, although amounts vary between cocoa beans as well as different brands of chocolate. Less than four ounces of milk chocolate is potentially fatal for Moose and other small dogs.

Around every confection-centered holiday — Valentine’s Day, Easter and Christmas — at least three or four dogs are hospitalized overnight in the animal medical center at Colorado State. But in 16 years, Hackett has seen just one dog die from chocolate poisoning, and he suspects it may have had an underlying disease that made it more exposed to chocolate’s heart-racing effect.

1. The underlined expression “belly-up” probably means______.

A. dead            B. poisonous                 C. running around  D. having a headache

2. All of the following are true EXCEPT______.

A. chocolate’s danger to dogs depends on its quantity and quality

B. people buy lots of chocolate around Valentine’s Day

C. an ounce of unsweetened baking chocolate is safe for Moose

D. there must be some theobromine or caffeine in espresso

3. What can we learn about Hackett?

A. He is an animal doctor.         B. He is a pet shop owner.

C. He is the owner of Moose       D. He is a doctor in a small hospital.

4. It can be inferred from the passage that Hackett believes that__________.

A. chocolate is truly deadly to dogs 

B. it’s OK to give chocolate to a big dog

C. pets are usually ignored around confection-centered holidays

D. a healthy dog probably could survive a chocolate poisoning

5. The passage is mainly about__________.

A. the poisoning of Moose   

B. the compounds of different chocolates

C. a handful M＆M’s chocolate is poisonous

D. the relation between methylxanthines and chocolate poisoning

   A small dog should be belly-up after eating a handful M＆M’s, at least according to conventional wisdom. But watching “Moose”, a friend’s five-pound Chihuahua, race around a living room after his sweet snack makes one wonder: Is chocolate truly poisonous to dogs?

    Dogs and humans have similar tastes. But unlike humans, our companions experience dangerous effects from eating chocolate — it can poison them and in some cases is fatal. Chocolate’s danger to dogs depends on its quality.

    Chocolate is processed from the bitter seeds of the cocoa tree, which contain a family of compounds known as methylxanthines（一种衍生物）. This class of substances includes caffeine and the related chemical theobromine(可可碱). Chocolate contains a significant amount of theobromine and smaller amounts of caffeine. These chemicals can cause a dog’s heart to race up to twice its normal rate, and some dogs may run around as if “they drank a gallon of espresso,” according to Hackett.

    Dogs are capable of handling some chocolate, but it depends on the animal’s weight and the type of chocolate it eats. Unsweetened baking chocolate contains more than six times as much theobromine as milk chocolate, although amounts vary between cocoa beans as well as different brands of chocolate. Less than four ounces of milk chocolate is potentially fatal for Moose and other small dogs.

    Around every confection-centered holiday — Valentine’s Day, Easter and Christmas — at least three or four dogs are hospitalized overnight in the animal medical center at Colorado State. But in 16 years, Hackett has seen just one dog die from chocolate poisoning, and he suspects it may have had an underlying disease that made it more exposed to chocolate’s heart-racing effect.

1. The underlined expression “belly-up” probably means______.

   A. dead            B. poisonous                 C. running around  D. having a headache

2. All of the following are true EXCEPT______.

   A. chocolate’s danger to dogs depends on its quantity and quality

   B. people buy lots of chocolate around Valentine’s Day

   C. an ounce of unsweetened baking chocolate is safe for Moose

   D. there must be some theobromine or caffeine in espresso

3. What can we learn about Hackett?

   A. He is an animal doctor.         B. He is a pet shop owner.

   C. He is the owner of Moose       D. He is a doctor in a small hospital.

4. It can be inferred from the passage that Hackett believes that__________.

   A. chocolate is truly deadly to dogs 

B. it’s OK to give chocolate to a big dog

   C. pets are usually ignored around confection-centered holidays

   D. a healthy dog probably could survive a chocolate poisoning

5. The passage is mainly about__________.

  A. the poisoning of Moose   

   B. the compounds of different chocolates

   C. a handful M＆M’s chocolate is poisonous

   D. the relation between methylxanthines and chocolate poisoning

BEIJING, MAY 13—The strength（强度） of this earthquake is being compared to the destructive (破坏性的)force of the Tangshan earthquake in 1976 which killed tens of thousands. Seismologists (地震学家) are telling the public not to believe rumors (谣言) about more earthquakes.

Jiang Haikun said the energy from the Wenchuan earthquake was as huge as the Tangshan earthquake in 1976, which killed more than 240,000 people. The strength of the earthquake was big and it released（释放） a huge amount of energy so that many parts of the country felt the quake. He emphasized （强调）that Beijing did not experience a separate earthquake. The quake we felt in Beijing today was not a separate earthquake. It was just the aftershocks from the Wenchuan earthquake in the afternoon. Jiang Haikun also said, “ Our center’s research shows China and its neighbors are currently (当前) in a relatively-active period for earthquakes. For example, a 7.3 magnitude (级) earthquake occurred in Japan recently. On the Chinese mainland, a 6.9 magnitude quake took place in Tibet in January, while March saw a 7.3 magnitude quake in Yutian in Xinjiang and now we have a 8.0 magnitude quake in Wenchuan. So at the moment there is a trend of earthquakes in China’s mainland and its neighboring countries.”

He also urged (敦促) residents not to trust rumors they heard. He stressed no destructive earthquake near Beijing is likely to occur in the near future.

64. What’s the main idea of the passage?

A. The earthquake in Wenchuan is as big as the earthquake in Tangshan.

B. Beijing didn’t experience a separate earthquake.

C. No destructive earthquake near Beijing is likely to happen.

D. The Wenchuan earthquake is very big and residents can’t believe the rumors.

65. Which of the following statements is true?

A. The Wenchuan earthquake killed 240,000 people 

B. China and its neighbors are now in relatively-active period for earthquakes.

C. China and all its neighbors could feel the Wenchuan earthquake.

D. An earthquake will happen in the near future in Beijing.

66. What do you know about Jiang Haikun from the passage?

A. He is an officer from the government.

B. He is a reporter from Wenchuan.

C. He works in a TV station.

D. He may be an expert from an earthquake research department.

67. What can be inferred from the passage?

A. Many parts could feel the earthquake.

B. The rumors are wrong at that time.

C. The residents are afraid of the earthquake.

D. It is natural that some earthquakes happen in China’s mainland now.