A: an effort to protect an endangered marine species
B: the civilian use of a military detection system
C: the exposure of a U. S. Navy top-secret weapon
D: a new way to look into the behavior of blue whales
举一反三
- The passage is chiefly about______ . A: an effort to protect an endangered marine species B: the civilian use of a military detection system C: the exposure of a U. S. Navy top-secret weapon D: a new way to look into die behavior of blue whales
- The author's main purpose in writing the passage is to ______. A: compare the consequences of the earthquakes that occurred in the U. S. B: encourage civil engineers to make more extensive use of computers C: outline the history of the development of quake-resistant building materials D: report new developments in constructing quake-resistant buildings
- The most effective way to prevent extinctions for the long term would be A: protecting the endangered species habitat B: capture breeding programs C: paying poachers to refrain from poaching D: removing the predators of endangered species E: instigating feeding programs for endangered species
- According to passage, what is one of the best ways to preserve endangered species?
- A VORTAC is a facility consisting of two components, VOR/DME and TACAN. VOR signals can be used by ______ receivers and TACAN for ______ aircraft. A: civilian, civilian B: military, military C: civilian, military D: military, civilian
内容
- 0
Which of the following is the author's main purpose in writing the passage A: To present the history of Harvard College and compare it with that of Yale University. B: To criticize the conditions of the U. S. universities in the 19th century. C: To describe innovations in the U. S. higher education in the late 180Os. D: To introduce what was happening in major U. S. universities before the turn of the century.
- 1
This passage is chiefly about ______. A: smoking in forests B: changing the attitudes and behavior of millions of people C: the chief causes; of forest fires and their prevention D: advances in knowledge of fire weather
- 2
The Pentagon is the U. S. military establishment, where more than 35,000 people are now employed.
- 3
The passage is chiefly about A: the birthplace of Shakespeare B: Mary’s childhood C: England's most famous playwright D: Mary Arden's house
- 4
The title that best expresses the theme of the passage is "______" . A: S. Adopts New Immigration Security System B: Other Countries Strongly Oppose US-VISIT System C: New System Brings Many Benefits to Visitors D: Powell Defends Immigration Security Procedures