语法与词汇Hot springs are one of the most characteristic features of areas of recent volcanic activity, although----- in other areas less abundantly.
语法与词汇In the years ahead, health professionals will be able to enhance or restore health far better ________at present.
语法与词汇"Did you see any foreigner present at the party?".
"He was the only foreigner ____ I saw at the party."
语法与词汇Most whole milk undergoes homogenization, -------hot milk is pumped through valves to break up and permanently disperse the fat globules.
语法与词汇Since prehistoric people first applied natural pigments to cave walls, _________ have painted to express themselves.
语法与词汇A lingua franca is any auxiliary language, -------a rudimentary kind, used as a medium of communication between people who speak different languages.
语法与词汇(Most) fish swim by (moving) their tails from (side to) side, with (little relatively) body undulation
语法与词汇Pig iron, wrought iron, and steel contain iron carbides made up of ______ of carbon.
语法与词汇------both safety and reliability have always been primary goals of the railway mechanical engineer.
语法与词汇Unique (among) bivalves, scallops swim extremely (well), propelled by jets of water expelled while (snapped) the shell (shut).
语法与词汇Lichens grow extremely well in very cold parts of the world ____plants can survive.
语法与词汇The average (surface temperature) of the Earth (has been risen) by (approximately) one degree (over the last) century.
语法与词汇I will employ the man ______ they say is a fluent speaker of English.
语法与词汇Outbreaks of diseases in trees commonly occur _____ stressed because of drought or other environmental factors.
语法与词汇---- to learn about human origins and evolution, the physical anthropologist studies fossil remains and observes the behavior of other primates.
语法与词汇This is ___________ such a thing.
语法与词汇The province of Alberta lies along three of the major North American flyways Used by birds _______between their winter and summer homes.
语法与词汇___ places on the Earth where plant and animal life has not been affected by the activities ofhumans.
语法与词汇In the early 1900's, Albert Einstein showed---, under special circumstances, matter and energy can be converted into one another.