سری 4: سوالات امتحان میان ترم زبان انگلیسی پایه دهم رشته های نظری (درس 3 و 4)
درس 3: The Value of Knowledge
درس 4: Traveling the World
لطفا برای اطمینان از عملکرد و تجربه بهتر از مرورگرهای مدرن و به روز مانند کروم یا فایرفاکس استفاده کنید.

Some of these scientists did not have easy lives. But they tried hard when they were working on problems. They never felt weak when they were studying. They never gave up when they were doing research. What do you understand from this reading?