Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

   Not much is known about the saola, a mysterious horned mammal native to forests in the Annamite Mountains of Laos and Vietnam. The species was unknown to Western science until 1992, when researchers encountered saola horns in the home of a local hunter. Scientists have only managed to record a saola in the wild five times and only with camera traps. At least one thing seems fairly certain, though: The saola is a very endangered species. 

   Adult saolas are about 33 inches tall at the shoulder, but they can weigh 220 pounds, and their two long horns can grow to 20 inches. Smaller than most cattle and bison, they have managed to hide from humans better than other animals at their size. They are likely the world's largest land animal that has never been seen in the wild by a biologist. Even so, they are still suffering the effects of human's presence. 

   Hunting is the main danger to the saolas, even though most hunters in the species' range have little interest in killing or capturing them. Unlike many other animals in their habitat, the saolas are not featured in the traditional Chinese pharmacopeia, so there isn't much financial incentive for hunters to target saolas for export. The species' meat is not considered especially appealing compared with other, more common ungulates in the same forests, like muntjacs or sambar deer, so they are not highly valued as bushmeat, either. Nonetheless, they're often incidentally killed amid the general pursuit of other wildlife. Some saolas fall victim to bushmeat hunters, but the main threat comes from wire traps set by professional poachers. 

   Another major threat to the saola is a familiar one for wildlife all over the world: the loss and fragmentation of its habitat. The development of the Ho Chi Minh Highway has already affected saola populations by fragmenting forests as well as by increasing human access for logging, hunting, and spiriting wildlife away to urban markets. The road has also led to more deforestation in several key areas for the saola, especially the Hue Saola Nature Reserve and Quang Nam Saola Reserve. The high growth rate in human populations will likely add to the pressures already fueling the saola's decline. 

   People have been trying to capture saolas about 20 times since 1992. Unfortunately, all have died shortly afterward except for two that were released back into the wild. There are currently no captive saolas anywhere, and thus no backup for wild populations. If a captive breeding program can't be established before the last wild saolas fade away, the species will be lost forever. 

(Adapted from https://www.treehugger.com) 

What is the passage mainly about?

It can be inferred from the passage that _______.

According to the passage, which of the following is NOT true?

The word “ceased” in paragraph 2 mostly means _______.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 44 to 50

If you go back far enough, everything lived in the sea. At various points in evolutionary history, enterprising individuals within many different animal groups moved out onto the land, sometimes even to the most parched deserts, taking their own private seawater with them in blood and cellular fluids. In addition to the reptiles, birds, mammals and insects which we see all around us, other groups that have succeeded out of water include scorpions, snails, crustaceans such as woodlice and land crabs, millipedes and centipedes, spiders and various worms. And we mustn’t forget the plants, without whose prior invasion of the land, none of the other migrations could have happened.

Moving from water to land involved a major redesign of every aspect of life, including breathing and reproduction. Nevertheless, a good number of thoroughgoing land animals later turned around, abandoned their hard-earned terrestrial re-tooling, and returned to the water again. Seals have only gone part way back. They show us what the intermediates might have been like, on the way to extreme cases such as whales and dugongs. Whales (including the small whales we call dolphins) and dugongs, with their close cousins, the manatees, ceased to be land creatures altogether and reverted to the full marine habits of their remote ancestors. They don’t even come ashore to breed. They do, however, still breathe air, having never developed anything equivalent to the gills of their earlier marine incarnation. Turtles went back to the sea a very long time ago and, like all vertebrate returnees to the water, they breathe air. However, they are, in one respect, less fully given back to the water than whales or dugongs, for turtles still lay their eggs on beaches.

There is evidence that all modem turtles are descended from a terrestrial ancestor which lived before most of the dinosaurs. There are two key fossils called Proganochelys quenstedti and Palaeochersis talampayensis dating from early dinosaur times, which appear to be close to the ancestry of all modem turtles and tortoise. You might wonder how we can tell whether fossil animals lived in land or in water, especially if only fragments are found. Sometimes it’s obvious. Ichthyosaurs were reptilian contemporaries of the dinosaurs, with fins and streamlined bodies. The fossils look like dolphins and they surely lived like dolphins, in the water. With turtles it is a little less obvious. One way to tell is by measuring the bones of their forelimbs.

Which of the following is TRUE about the main reason for discrimination?