I. Look at the following sentences paying attention to the use of the degrees of comparison of adjectives and adverbs
1. The brains of larger tailless anthropoid apes, although much smaller than a modern human brain, are relatively well developed as compared with lower primates and have the same patterns of convolutions as the human brain has.
2. Homo sapiens emerged during the Pleistocene epoch, which was marked by the gradual onset of a cooler climate in many parts of the world about 2.5 million years ago and by a general lowering of temperature that finally led to the great Ice Ages.
3. At the same time, the whole skull tends to become lighter and more delicate in its structures.
4. It seems likely that the precision grip evolved later than the power grip and that its perfection may even have been a specialization in Homo sapiens.
5. At the beginning of the geologic phase now called the Tertiary period — about 66.4 million years ago — there were in existence the most primitive of the primates.
II. Use the adjectives from the brackets in the correct degree
1. One of the ________ (early) defining human traits, bipedalism — the ability to walk on two legs — evolved over 4 million years ago.
2. Australopiths had _______ (short) and ________ (little) flexible toes than do apes.
3. Oldowan toolmakers sought out the ________ (good) stones for making tools and carried them to food-processing sites.
4. With the evolution of late Homo, humans began to hunt even the _______ (large) animals on Earth, including mastodons and mammoths, members of the elephant family.
5. The australopith ilium, or pelvic bone, which rises above the hip joint, was much _______ (short) and ________ (broad) than it is in apes.
6. About 98 percent of the genes in people and chimpanzees are identical, making chimps the ________ (close) living biological relatives of humans.
7. The biochemical systems of modern Asian and European human populations appear to be ________ (similar) to each other than those of either group are to African populations.
8. The ________ (early) monkeys and apes evolved from ancestral haplorhine (meaning "simple-nosed") primates, of which the ________ (primitive) living representative is the tarsier.
9. The foramen magnum (the area of the skull through which the spinal cord passes) lies ________ (near) the centre of the skull in Australopithecus africanus than it does in the apes.
10. Human brains are much ________ (large) and ________ (complex) than those of apes, and people have a unique intellectual capacity and elaborate forms of culture and communication.