A．s used in this passage, "structures" means ______.

A． endurance

B． organization

C． necessary parts

D． energy

[单选题]In this passage, "learned" is used ______.A． as a word equal to "educated"B． as a word similar to "informed"C． as a word close to "acquired"D． as a word opposite to "popular"

[单选题]A．s used in this passage，the word “valid” in the second paragraph means______A． foreignB． 1egalC． monetaryD． illegal

[单选题]设串s1="Data Structures、with Java"，s2="it"，则子串定位函数index(s1，s2)的值为 ( )A．15B．16C．17D．18

[单选题]A．ccording to the passage, growing lab meat is technically difficult because _________A． meat is a tissue not difficult to be made artificiallyB． it is too expensive to produce a single pound of lab meatC． different cell types play different roles in

[单选题]A．ccording to the passage, both "popular" words and "learned" words ______.A． seem to be of no useB． can help people to get a better comprehension of the language.C． are easy to masterD． have gone beyond our mother's reach

[单选题]In this passage, "optical" can be understood as related to ______.A．lightB．audioC．electronicsD．multimedia

[单选题]"Let me ______ you," said my boss, "you should call me immediately after yo

[单选题]Passage Four"Cool" is a word with many meanings. Its old meaning is used to express a temperature that is a little bit cold. As the world has changed, the word has had many different meanings."Cool" can be used to express feelings of interest in

[单选题]The last word of the passage "counts" most probably means ______.A． is most importantB． is includedC． is consideredD． is numbered

[单选题]The word "off-limit" in the passage may meanA．off-setB．off-stateC．within limitsD．beyond the limit