Ironically, a study finds that we’re awful gift-givers precisely because we spend too much

s are good for your health. The【C1】______of this new study suggest that people who have pet are【C2】______less risk from heart disease than【C3】______who do not. Ironically this【C4】______study on pets was intended to【C5】______the myth that pets are good for your health. Earlier research【C6】______the benefits of owning pets received a lot of【C7】______, but the results were not good enough to【C8】______the more skeptical(怀疑的)doctors. The new research was carried【C9】______. Over three years and examined 6,000 people the largest group yet involved in【C10】______a study. They took tests that measured a【C11】______of different factors known to be【C12】______in heart disease-blood【C13】______and cholesterol(胆固醇),【C14】______, people were asked about their life styles. The 800 people who owned pets had【C15】______levels on each of the factors【C16】______than those who did not own pets. The differences were even greater than those found in similar studies on people who【C17】______to vegetarian diets or took【C18】______exercise. The study also showed that it did not matter【C19】______kind of pet was owned a cat was as good as a dog so the benefits could not be attributed【C20】______the exercise involved in walking a dog.

【C1】

A．findings

B．conclusions

C．indications

D．signs

The whole system is in equilibrium state. Which set of equilibrium equations is correct？

A、Study ADB： åmA(F) = NB×2L + YD×L = 0

B、Study the whole system： åmA(F) = - P×(L+r) + NB×2L = 0

C、Study CDE and the pully： åmD(F) = - P×r - T×(L – r) + XE×L + SBC×L×sin30° = 0

D、Study the whole system： åmA(F) = - P×(L+r) + NB×2L - T×(L – r) = 0

A.speed

B.smile

C.sincerity

D.smart

E.study

F.society

A．They complete all their assignments.

B．They study hard for his tests.

C．They compete for the best seats in the class.

D．They read all his books.

A．They complete all their assignments.

B．They study hard for his tests.

C．They compete for the best seats in the class.

D．They read all his books.

A.student 学生

B.studio 工作室

C.study 学习，研究

D.stuff 东西

E.stupid 愚蠢的

F.无错误

A、climate

B、existing facilities

C、sunlight

D、soil

E、vegetation

F、fund available

A．They complete all their assignments.

B．They study hard for his tests.

C．They compete for the best seats in the class.

D．They read all his books.