某科研所为了开发痢疾疫苗，利用鼷鼠做了一系列实验。实验的主要过程及结果如下表所示：
根据上表中的结果，分析并完成下列问题：
戊组与丁组对照，说明抗痢疾杆菌抗体的合成过程需要（）细胞的帮助，抗体的合成需哪些细胞器参与（）。与乙组相比，丁组抗体合成程度较低的原因是（）
参考答案：T；核糖体、内质网、高尔基体；摘除胸腺后，体内T细胞大量减少，体液免疫的感应阶段抗原呈递受阻所致
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| There is a big park near my home. It is big and beautiful. In the park, there are many 1 and trees. In spring, when flowers come out (开放), the park looks very beautiful. People all like to 2 there. In the morning, many people take exercise there. Students like to 3 books there. After 4 , people like to take a walk there with their friends or families. There are many benches (长椅) for people to sit on when they 5 tired. Today is Sunday. There are many 6 in the park. Jim and his friends chat 7 the big tree. Lucy and Lily walk and talk about 8 interesting film. There is a lake 9 the park. Some children swim in the lake, and others fish there. They all have a 10 time. | ||||
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