With the help of the space-shuttle-carried radar, archeologists found The stream-rounded pebbles and Stone-Age axes which were

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问题 With the help of the space-shuttle-carried radar, archeologists found
The stream-rounded pebbles and Stone-Age axes which were found along the ancient river banks show that

选项 A、an early human civilization once existed along the old river banks.
B、ancient people didn’t know how to make weapons.
C、most species of animals in Sahara have disappeared.
D、early humans were good at fighting with sharp weapons.

答案A

解析

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本试题收录于：职称英语理工类A级题库职称英语分类

职称英语理工类A级

职称英语

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With the help of the space-shuttle-carried radar, archeologists found The stream-rounded pebbles and Stone-Age axes which were

职称英语理工类A级

职称英语

FermiProblemOnaMondaymorninginJuly,theworld’sfirstatombombexplodedinNewMexicodesert.Fortysecondslater,t

ABiologicalClockEverylivingthinghaswhatscientistscallabiologicalclockthatcontrolsbehavior.Thebiologicalclo

NaturalMedicinesSinceearliestdays,humanshaveusedsomekindsofmedicines.Weknowthisbecausehumanshavesurvived.

ManyChildren’sDeathsPreventable:WHOOverfivemillionchildrendieeachyearfromdisease,infectionsandaccidentsrela

AtooweakandillBhuntingandgatheringculturesCchildhooddiseasesDnooneathomeEepidemicdiseasesFtraditionalcult

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ThepeoplewhospeakEsperantohopethatthelanguagesomedaywillbecometheinternationallanguagefortrade,science,anddip

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