7.In spite of many risks, scientists will finally

［A］an environment without ultraviolet light

［B］a lot of homes

［C］an Earth like environment

［D］an environment with atmosphere

[单选题]The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.A． whatB． whichC． thatD． though

[单选题]Scientists have many theories about how the universe ___ into being.A． cameB. was comingC． had comeD. would come

[单选题]Many scientists have been probing psychological problems.A．solvingB．exploringC．settlingD．handling

[单选题]D．o scientists know how many cryptic species exist?A．Not yet.B．Yes, they do.C．They will know the answer in another one or two years.D．They will never know the answer.

[单选题]Many scientists _____their own eyes and ears than the theories of the ancie

In the middle of winter, when snow is falling in many parts of the United States

【单选题】12、Scientists could see many things that most people would ( ) to see.A. fe

7.In faIl 2010,she helped __ a pilot project in Chicago to see if the iPad-|||-c

[多选题]Which of the following risks belong to the special additional risks？（）A.on

[多选题]Which of the following risks belong to the special additional risks？（）A.on