正确答案: C

一个生殖细胞和一个营养细胞

题目：二细胞(二核)时期的花粉粒含有( )。

解析：C

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举一反三的答案和解析：

[单选题]根初生维管组织中，木质部与韧皮部的排列是( )。

相间排列

[单选题]What can we infer from the text?

Many people have wrong ideas about breakfast.

[单选题]

benefits

[单选题]EThere were smiling children all the way. Charily they knew at what time the train passed their homes and they made it their business to stand along the railway, wave to complete strangers and cheer them up as they rushed towards Penang. Often whole families stood outside their homes and waved and smiled as if those on the trains were their favorite relatives. This is the simple village people of Maiaysia. I was moved. I had always traveled to Malaysia by plane or car, so this was the first time I was on a train. I did not particularly relish the long train journey and had brought along a dozen magazihes to read and reread. I looked about the train. There was not one familiar face. I sighed and sat down to read my Economics. It was not long before the train was across the Causeway and in Malaysia. Johore Baru was just another city like Singapore, so I was tired of looking at the crowds of people as they hurried past. As we went beyond the city, I watched the straight rows of rubber trees and miles and miles of green. Then the first village came into sight, Immediately I came alive; I decided to wave hack. From then on my journey became interesting. I threw my magazines into the waste basket and decided to join in Malaysian life. Then everything came alive. The mountains seemed to speak to me. Even the trees were smiling. I stared at everything as if I was looking at it for the first time. The day passed fast and I even forgot to have my lunch until I felt hungry. I looked at my watch and was surprised that it was 3:00 pm. Soon the train pulled up at Butterworth. I looked at the people all around me. They all looked beautiful. When my uncle amved with a smile, I threw my arms around him to give him a warm hug (拥抱). I had never done this before. He seemed surprised and then his weather-beaten face warmed up with a huge smile. We walked arm in arm to his car. I looked forward to the return journey.

dull

[单选题]植物分类学的创始人是( )。

林奈

[多选题]在下列特征中，蓝藻门和红藻门相似的特征是( )。

光合色素具藻胆素

生活史中无带鞭毛的细胞

解析：AB

[单选题]Computers and mobile phones, playgh they are indeed making our life__________ and more ________have reduced the need for face-to-face cotyr unication.

easy,efficient

[单选题]茎中初生射线是指( )。

髓射线

[单选题]Sam _____ some knowledge of the computer just by watching others working on it.

picked up

解析：

本题考查动词短语意义辨析。句意应为“山姆只是凭借看别人操作电脑就学到了一些电脑知识。”表示“学会”用pick up; pick up另外还有“捡起; 顺车接送,搭载；收拾，整理；重新开始；获得”等义；bring up 表示“抚养，教育；提出；呕吐”；look up 表示“向上看；（形势）好转，改善；查阅”；set up表示“建立，设置；造成，产生”。