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【判断题】
引种不能够充分利用现有品种资源A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】My grandfather， a retired worker， often __________ the past with a feeling of longing and respect.
A.
considers
B.
contemplates
C.
contrives
D.
contacts
【简答题】实验课上，某小组的同学用生石灰进行“化学反应中能量的变化”实验时发现：向块状生石灰中加入适量水后没有明显的温度变化．为确定其原因，进行了如下实验探究． 【提出问题】生石灰是否变质？其成分是什么？ 【查阅资料】氢氧化钙溶解过程中无明显温度变化，与盐酸反应无气体生成． 【猜想与假设】同学们认为生石灰样品已经变质，并对其成分作出了如下4种猜想． 猜想1：氧化钙和氢氧化钙； 猜想2：氧化钙和碳酸钙； 猜想...
【单选题】With my hand-held Reader, I’ve read more books in the past six months than I ________ in the past six years.
A.
doing
B.
did
C.
have
D.
do
【单选题】No one has come up with a better explanation of why dinosaurs ______.A．died awayB．died forC．died
A.
37. No one has come up with a better explanation of why dinosaurs ______. A．died away
B.
died for
C.
died of
D.
died out
【单选题】--- Yesterday Tommy walked past my table and ______ my bowls and dishes. --- He should be careful next time.
A.
knocked off
B.
took off
C.
showed off
D.
turned off
【判断题】检测 A 、 B 、 C 三个小麦品种子粒蛋白质含量,每一品种随机抽取 10 株,每株子粒蛋白质检测 3 次,这类试验资料属于单因素随机区组试验资料。
A.
正确
B.
错误
【单选题】下图是甲、乙两人l0次射击成绩（环数）的条形统计图．则下列说法正确的是
A.
甲比乙的成绩稔定
B.
乙比甲的成绩稳定
C.
甲、乙两人的成绩一样稳定
D.
无法确定谁的成绩更稳定
【简答题】Remembering My Grandparents When memory began for me, my grandfather was past sixty -- a great tall man with thick hair becoming gray.He had black eyes and a straight nose which ended in a slightly fl...
【单选题】Approximately how old was Emily Dickinson when she died?
A.
In her twenties.
B.
In her thirties.
C.
In her fifties.
D.
In her eighties.
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