Unchecked adj.未受制止的, 未經(jīng) 檢查 的
Unlocked adj.顯露的
Unmeasured adj.不可測(cè)量的
13． A) personally B)accurately C)formally D)directly
It cannot be seen or detected _13_ ．
13． 分析：借助空格所在的句子大意“它（黑色物質(zhì)的性質(zhì)）不能被看見(jiàn)或察覺(jué)。?！迸袛郉（直接地）是答案。
Personally adv.親自
14． A)all B)total C)overall D)sum
Astronomers know it is there because of its effect on celestial objects than can be seen and measured．But the most dominating force of _14_ in the universe is called dark energy, a recently proven power that astronomers say is causing the galaxies in the universe to separate at a faster and faster speed．
14． A. 分析：空格處需要名詞性的結(jié)構(gòu)，因此排除C（形容詞），B和D都是指“總數(shù)”在這層含義上是近義詞，但前面應(yīng)該有定冠詞the, 如：What does the total/ sum come to?（總數(shù)是多少？），因此判斷B和D都不是答案，答案應(yīng)該是A。
15． A)when B)that C)how D)what
One scientist said it is clear now _15_ dark matter and dark energy engaged in a gravitational tug of war that，eventually，dark energy won．
15． 分析：被選項(xiàng)是連詞，因此注意整個(gè)句子的語(yǔ)法結(jié)構(gòu)和句意?？崭裉幩诘膹木浣Y(jié)構(gòu)在句子中作主語(yǔ)從句，而從句所在的結(jié)構(gòu)大意是“黑色物質(zhì)和黑色能量參與了最終黑色能量獲勝萬(wàn)有引力上的拔河比賽，而最終黑色能量獲得了勝利?！?借助該結(jié)構(gòu)含義判斷B是答案。
Unlocked adj.顯露的
Unmeasured adj.不可測(cè)量的
13． A) personally B)accurately C)formally D)directly
It cannot be seen or detected _13_ ．
13． 分析：借助空格所在的句子大意“它（黑色物質(zhì)的性質(zhì)）不能被看見(jiàn)或察覺(jué)。?！迸袛郉（直接地）是答案。
Personally adv.親自
14． A)all B)total C)overall D)sum
Astronomers know it is there because of its effect on celestial objects than can be seen and measured．But the most dominating force of _14_ in the universe is called dark energy, a recently proven power that astronomers say is causing the galaxies in the universe to separate at a faster and faster speed．
14． A. 分析：空格處需要名詞性的結(jié)構(gòu)，因此排除C（形容詞），B和D都是指“總數(shù)”在這層含義上是近義詞，但前面應(yīng)該有定冠詞the, 如：What does the total/ sum come to?（總數(shù)是多少？），因此判斷B和D都不是答案，答案應(yīng)該是A。
15． A)when B)that C)how D)what
One scientist said it is clear now _15_ dark matter and dark energy engaged in a gravitational tug of war that，eventually，dark energy won．
15． 分析：被選項(xiàng)是連詞，因此注意整個(gè)句子的語(yǔ)法結(jié)構(gòu)和句意?？崭裉幩诘膹木浣Y(jié)構(gòu)在句子中作主語(yǔ)從句，而從句所在的結(jié)構(gòu)大意是“黑色物質(zhì)和黑色能量參與了最終黑色能量獲勝萬(wàn)有引力上的拔河比賽，而最終黑色能量獲得了勝利?！?借助該結(jié)構(gòu)含義判斷B是答案。