辛达托福代报考位：到2016年1月26日上午托福官网没有释放考位，在此提醒广大考生抓紧时间报名，注意自己的考试时间，如对雅思报名有任何疑问，欢迎咨询在线客服　　282. The simple of these is the carbon dioxide from the respiration of an  ant cluster, a chemical that acts pheromone to promote agtoeflgation.

　　The word "cluster" is closest in meaning to which of following?

　　(A) organ

　　(B) activity

　　(C) group

　　(D) cycle

　　283. Fire ants also make use of an alarm pheromone to alert workers to an  emergency, and their scouts lay down a trail pheromone as a guide during mass  migrations.

　　The word "alert" is closest in meaning to which of following?

　　(A) allow

　　(B) transport

　　(C) warn

　　(D) provide

　　284. A fire ant queen emits a chemical signal that identifies her to the  colony's workers. They respond by scurrying to gather around her. The  decomposing corpse of a dead ant also generates a signal, to which workers  respond by eliminating the corpse from the nest.

　　The word "scurrying" is closest in meaning to which of following?

　　(A) atoefleing

　　(B) appearing

　　(C) competing

　　(D) rushing

　　285. Rivers also reveal clay along their banks, and erosion on a hillside  may make clay easily accessible.

　　The word "accessible" is closest in meaning to which of following?

　　(A) buried

　　(B) improved

　　(C) available

　　(D) workable

　　286. Variations of clay composition and the temperatures at which they are  fired account for the differences in texture and appearance between a china  teacup and an earthenware flowerpot.

　　The phrase "account for" is closest in meaning to which of following?

　　(A) reduce

　　(B) explain

　　(C) combine with

　　(D) list all of

　　287. One researcher observed babies and their mothers in six diverse  cultures and found that, in all six languages, the mothers used simplified  syntax, short utterances and nonsense sounds, and transformed certain sounds  into baby talk.

　　The word "diverse" is closest in meaning to which of following?

　　(A) surrounding

　　(B) divided

　　(C) different

　　(D) stimulating

　　288. Other investigators have noted that when mothers talk to babies who  are only a few months old, they exaggerate the pitch, loudness, and intensity of  their words.

　　The word "noted" is closest in meaning to which of following?

　　(A) theorized

　　(B) requested

　　(C) disatoefled

　　(D) observed

　　289. They also exaggerate their facial expressions, hold vowels longer, and  emphasize certain words.

　　The word "emphasize" is closest in meaning to which of following?

　　(A) stress

　　(B) repeat

　　(C) explain

　　(D) leave out

　　290. When songs have been subjected to these processes, their origin is  usually impossible to trace.

　　The word "subjected" is closest in meaning to which of following?

　　(A) reduced

　　(B) modified

　　(C) exposed

　　(D) imitated

　　291. This constant reshaping and re-creation is the essence of folk music.  Consequently, modern popular songs and other published music, even though widely  sung by people who are not professional musicians, are not considered folk  music.

　　The word "essence" is closest in meaning to which of following?

　　(A) basic nature

　　(B) growing importance

　　(C) full extent

　　(D) first phase

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