Passage 1: Wolves and Dogs
Scientists know that there were wolves on Earth about one million years ago. Dogs, on the other hand, have not been on Earth nearly as long. The oldest dogs remains, found in Germany, are about 14,000 years old. Scientists have proven that dogs are descended from wolves. Though wolves and dogs share some of the same genes, they are not exactly alike. In fact, there are as many differences as there are similarities between the two.
First, there are physical differences between the two. Wolves have long legs, larger feet, and broader skull than most dogs. They also walk differently than dogs. A wolf runs on its toes with its heels raised up from the ground. This is more similar to a cat’s walk than a dog’s.
Second, there are mental differences between the two. Dogs have been domesticated. [A]This means that dogs have been brought under the control of humans in order to provide companionship. [B] Wolves have not been domesticated. They are wild animals. [C] Having a dog as a pet is like having a juvenile wolf. A young wolf will turn into a mature adult, while a young dog does not mature. A dog might seem smart by performing tricks for people. [D] Wolves need to be smart to survive in the wild. While it may not be impossible to have a wolf as a pet, scientists are of the opinion that a wolf could never be domesticated in the same way as a dog.
It is important to keep in mind that the differences between the two are great, and each should be appreciated in its own habitat or home.
1. The word “similarities” in paragraph 1 is closet meaning to
A. Like traits C. Coincidences
B. Different traits D. Characteristics
2. Which of the following could best replace the word “survive” as used in paragraph 3?
A. Revenge C. Protect
B. Stay alive D. Have babies
3. According to the passage, which of the following is true about wolves?
A. They are faster than dogs.
B. They have larger feet than dogs.
C. They have been in Germany for 14,000 years.
D. They like to kill.
4. Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information.
A. It is not possible to keep wolves as pets because they are different from dogs.
B. Scientists believe that domesticated wolves are friendlier than dogs.
C. Though some may keep wolves as pets, they cannot be fully trained like dogs can.
D. Even though dogs have been domesticated, scientists think that wolves can be better pets.
5. Look at the for squares [x] that indicate where the following sentence could be added to the passage:
Scientists, however, have determined that wolves are more intelligent than dogs.
Where would the sentence best fit? Choose the square[x] where the sentence should be added to the passage.