The summer holiday is coming. Why not think about relaxing on the beach with a drink in your hand and sunshine on your body? Hawaii (夏威夷) is a perfect place for your holiday. The following islands in Hawaii are good choices for you.                                                                                         Molokai        If you go on holiday to experience local culture and history, then there is no place better than the island of Molokai. Take a tour of the Halawa Valley(山谷), and find out what Hawaii might have looked like hundreds of years ago. ★Price：＄160 for a two-day trip for each person                half price for children under 12 years old                                                                                                            Kauai        Do you prefer your holiday to be more exciting? There is a state park here. The park is full of beautiful scenery (风景) and nature trails (小路). You can try a hike along the coast on the 18-kilometer trail, or book a place at the Hanakoa campsite (营地) so you can rest under the stars. ★Price： ＄120 for a two-day trip for each person                          free for children under 12 years old                                                                                    The Island of Hawaii        The Island of Hawaii, it is also called “the Big Island”. If you dream about leaving the city behind and spending all of your time with the local wildlife, this may be the place for you! Here you can swim with fish, and maybe you will see a dolphin or a whale by the coast. ★Price： ＄300 for a three-day trip for each person                          only for adults between 18 and 50 Click here to get more information.

31. The passage is mainly about ________.

A．some choices of spending the holiday in Hawaii

B．some reasons why Hawaii becomes famous

C．the best time to visit Hawaii

D．the best scenery in Hawaii

32. Molokai is the best place to experience ________.
①local culture ②local history ③local lifestyles ④local food

A．①②

B．①③

C．②③

D．③④

33. If you want to spend time with wildlife, you can go to ________.

A．Molokai	B．Kauai
C．the Island of Hawaii	D．Halawa Valley

34. When Mr.Smith visits Kauai with his ten-year-old son, he should pay ________.

A．＄60	B．＄120
C．＄180	D．＄240

35. This passage may come from ________.

A．a magazine	B．a book
C．a poster	D．a website

David Bennett, a 57-year-old man from the US, received the world’s first pig heart transplant（移植）on January 7th, 2022. He died two months later on March 9th.

       It may sound like a failure, but it actually is a big step forward for xenotransplantation（异种器官移植）.
       Xenotransplantation has been a hot topic in medical research for many years.Doctors and scientists look for ways to solve the big problem of organ（器官）transplant waiting lists. In the US alone, over 100,000 patients are on a list waiting for new organs. Many of them will die before getting their chance to receive a heart, a kidney（肾）or other important organs. As a result, medical science has turned to animal organs.
       Doctors have experimented with xenotransplantation since the early 20th century. There are few success stories. Usually, patients’ bodies reject（排斥）the animal organs. Bennet lived much longer than other xenotransplantation patients. That’s because scientists removed pig genes（基因）that would cause fast rejection. Then they added human genes to help the body accept the organ.
       In fact, Bennett’s case was not the only success. Doctors at New York University attached（连接）gene-edited pig kidneys to a human patient’s blood vessels（血管）outside of the body in 2021. Doctors at University of Alabama put the gene-edited pig kidneys inside a patient’s body in the same year.
       Though these successes were short-lived, they show that there may be a way forward for xenotransplantation. “A lot of new information will come out. The development of this field will benefit from it and move forward at faster speed.” Muhammad Mohiuddin, director of the transplant program, told The Guardian.
36. How long did David Bennett live after the pig heart transplant?   ________

A．9 months

B．3 months.

C．2 months.

D．1 month.

37. What can we infer（推断）from Paragraph 3? ________

A．Human organs are expensive.

B．Many patients died because of the organ transplant.

C．Compared with human organs, animal organs are easier to get.

D．Patients cannot accept the animal organs in their bodies.

38. According to Paragraph 4, what may the main problem of xenotransplantation be? ________

A．Patients’ ideas.	B．Bodies’ rejection.
C．The high price.	D．The number of organs.

39. What does the underlined word “benefit” mean in Chinese in the last paragraph? ________

A．得益

B．赞扬

C．传播

D．涉及

40. What does the writer think of xenotransplantation?   ________

A．It should be stopped because of the death cases.

B．It has become more and more popular.

C．It is too difficult to carry on.

D．It is valuable and worth researching.